./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum.i -s /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9e9e68a4ced07da63a78ebad1c2cc86cbb57dae .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: MapEliminator tries to combine Int and (Array Int Int) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:15:34,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:15:34,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:15:34,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:15:34,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:15:34,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:15:34,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:15:34,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:15:34,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:15:34,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:15:34,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:15:34,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:15:34,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:15:34,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:15:34,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:15:34,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:15:34,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:15:34,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:15:34,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:15:34,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:15:34,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:15:34,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:15:34,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:15:34,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:15:34,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:15:34,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:15:34,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:15:34,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:15:34,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:15:34,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:15:34,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:15:34,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:15:34,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:15:34,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:15:34,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:15:34,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:15:34,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:15:34,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:15:34,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:15:34,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:15:34,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:15:34,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 18:15:34,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:15:34,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:15:34,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:15:34,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:15:34,759 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:15:34,759 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:15:34,759 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:15:34,759 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:15:34,760 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:15:34,760 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:15:34,761 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:15:34,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:15:34,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:15:34,762 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:15:34,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:15:34,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:15:34,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:15:34,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:15:34,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:15:34,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:15:34,763 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:15:34,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:15:34,763 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:15:34,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:15:34,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:15:34,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:15:34,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:15:34,764 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:15:34,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:15:34,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:15:34,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:15:34,767 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:15:34,768 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:15:34,768 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-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9e9e68a4ced07da63a78ebad1c2cc86cbb57dae [2020-11-29 18:15:35,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:15:35,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:15:35,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:15:35,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:15:35,052 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:15:35,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/../../sv-benchmarks/c/reducercommutativity/rangesum.i [2020-11-29 18:15:35,134 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/data/1f4246a42/ee3dcbcbf8754901871bbf13b19dae6c/FLAG565b433fd [2020-11-29 18:15:35,591 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:15:35,592 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/sv-benchmarks/c/reducercommutativity/rangesum.i [2020-11-29 18:15:35,602 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/data/1f4246a42/ee3dcbcbf8754901871bbf13b19dae6c/FLAG565b433fd [2020-11-29 18:15:35,958 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/data/1f4246a42/ee3dcbcbf8754901871bbf13b19dae6c [2020-11-29 18:15:35,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:15:35,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:15:35,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:15:35,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:15:35,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:15:35,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:15:35" (1/1) ... [2020-11-29 18:15:35,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f46807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:35, skipping insertion in model container [2020-11-29 18:15:35,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:15:35" (1/1) ... [2020-11-29 18:15:35,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:15:36,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:15:36,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:15:36,283 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:15:36,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:15:36,333 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:15:36,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36 WrapperNode [2020-11-29 18:15:36,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:15:36,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:15:36,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:15:36,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:15:36,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36" (1/1) ... [2020-11-29 18:15:36,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36" (1/1) ... [2020-11-29 18:15:36,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:15:36,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:15:36,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:15:36,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:15:36,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36" (1/1) ... [2020-11-29 18:15:36,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36" (1/1) ... [2020-11-29 18:15:36,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36" (1/1) ... [2020-11-29 18:15:36,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36" (1/1) ... [2020-11-29 18:15:36,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36" (1/1) ... [2020-11-29 18:15:36,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36" (1/1) ... [2020-11-29 18:15:36,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36" (1/1) ... [2020-11-29 18:15:36,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:15:36,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:15:36,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:15:36,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:15:36,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:15:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:15:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 18:15:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:15:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:15:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 18:15:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:15:36,887 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:15:36,887 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-29 18:15:36,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:15:36 BoogieIcfgContainer [2020-11-29 18:15:36,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:15:36,890 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:15:36,890 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:15:36,893 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:15:36,894 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:15:36,894 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:15:35" (1/3) ... [2020-11-29 18:15:36,896 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c727a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:15:36, skipping insertion in model container [2020-11-29 18:15:36,896 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:15:36,896 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:36" (2/3) ... [2020-11-29 18:15:36,896 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c727a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:15:36, skipping insertion in model container [2020-11-29 18:15:36,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:15:36,897 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:15:36" (3/3) ... [2020-11-29 18:15:36,898 INFO L373 chiAutomizerObserver]: Analyzing ICFG rangesum.i [2020-11-29 18:15:36,952 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:15:36,952 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:15:36,953 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:15:36,953 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:15:36,953 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:15:36,953 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:15:36,953 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:15:36,953 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:15:36,971 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states. [2020-11-29 18:15:36,993 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 13 [2020-11-29 18:15:36,993 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:15:36,993 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:15:36,999 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 18:15:36,999 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 18:15:36,999 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:15:37,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states. [2020-11-29 18:15:37,007 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 13 [2020-11-29 18:15:37,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:15:37,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:15:37,008 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 18:15:37,008 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 18:15:37,015 INFO L794 eck$LassoCheckResult]: Stem: 30#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(11);~N~0 := 0; 10#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~ret8, main_#t~mem9, main_#t~mem10, main_#t~ret11, main_#t~mem12, main_#t~mem14, main_#t~post13, main_~i~2, main_#t~ret15, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet7;havoc main_#t~nondet7; 32#L44true assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);init_nondet_#in~x.base, init_nondet_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc init_nondet_#t~nondet4, init_nondet_#t~post3, init_nondet_~x.base, init_nondet_~x.offset, init_nondet_~i~0;init_nondet_~x.base, init_nondet_~x.offset := init_nondet_#in~x.base, init_nondet_#in~x.offset;havoc init_nondet_~i~0;init_nondet_~i~0 := 0; 3#L18-3true [2020-11-29 18:15:37,015 INFO L796 eck$LassoCheckResult]: Loop: 3#L18-3true assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 7#L18-2true init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 3#L18-3true [2020-11-29 18:15:37,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:37,030 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-11-29 18:15:37,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:37,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219408105] [2020-11-29 18:15:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:37,177 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:37,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:37,247 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:37,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1379, now seen corresponding path program 1 times [2020-11-29 18:15:37,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:37,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982013842] [2020-11-29 18:15:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:37,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:37,283 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:37,290 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:37,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:37,292 INFO L82 PathProgramCache]: Analyzing trace with hash 28693956, now seen corresponding path program 1 times [2020-11-29 18:15:37,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:37,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500532759] [2020-11-29 18:15:37,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:37,336 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:37,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:37,408 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:37,785 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-29 18:15:37,917 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-11-29 18:15:37,931 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:15:37,931 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:15:37,931 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:15:37,931 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:15:37,932 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:15:37,932 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:37,932 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:15:37,932 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:15:37,932 INFO L133 ssoRankerPreferences]: Filename of dumped script: rangesum.i_Iteration1_Lasso [2020-11-29 18:15:37,933 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:15:37,933 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:15:37,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:37,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:37,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:37,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:37,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:37,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:37,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:37,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:38,316 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-11-29 18:15:38,864 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:15:38,868 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:38,878 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:38,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:38,881 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:38,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:38,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:38,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:38,883 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:38,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:38,886 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:38,911 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:38,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:38,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:38,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:38,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:38,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:38,915 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:38,915 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:38,917 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:38,958 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:38,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:38,960 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:38,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:38,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:38,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:38,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:38,962 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:38,968 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:38,998 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:38,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:38,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:38,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,000 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,003 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:39,003 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:15:39,007 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:39,054 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,059 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,087 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,089 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,100 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,100 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:39,102 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,131 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:39,160 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:39,200 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,206 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:39,247 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,252 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:39,252 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,257 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,301 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:39,308 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:39,355 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,357 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,358 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,359 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,360 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,401 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,416 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:39,416 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:15:39,420 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,450 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,451 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:39,454 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,479 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:39,493 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,516 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:39,524 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,546 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,548 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,548 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,549 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,549 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:39,550 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,572 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,574 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:39,579 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,601 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,604 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,604 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:39,607 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:39,633 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,636 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,636 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:39,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,637 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:39,637 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:39,639 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,666 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:39,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:39,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:39,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:39,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:39,683 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:39,683 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:15:39,694 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:15:39,912 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-11-29 18:15:39,912 INFO L444 ModelExtractionUtils]: 13 out of 28 variables were initially zero. Simplification set additionally 12 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:39,936 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:39,939 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 18:15:39,940 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:15:39,940 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_init_nondet_~i~0, ~N~0) = -1*ULTIMATE.start_init_nondet_~i~0 + 1*~N~0 Supporting invariants [] [2020-11-29 18:15:40,008 INFO L297 tatePredicateManager]: 11 out of 11 supporting invariants were superfluous and have been removed [2020-11-29 18:15:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:40,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:15:40,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:40,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:15:40,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:40,097 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 [2020-11-29 18:15:40,098 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states. Second operand 3 states. [2020-11-29 18:15:40,260 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states.. Second operand 3 states. Result 89 states and 135 transitions. Complement of second has 7 states. [2020-11-29 18:15:40,264 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 [2020-11-29 18:15:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 18:15:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2020-11-29 18:15:40,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 93 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 18:15:40,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:15:40,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 93 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 18:15:40,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:15:40,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 93 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-29 18:15:40,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:15:40,273 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 89 states and 135 transitions. [2020-11-29 18:15:40,283 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 11 [2020-11-29 18:15:40,294 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 89 states to 23 states and 33 transitions. [2020-11-29 18:15:40,296 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2020-11-29 18:15:40,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-11-29 18:15:40,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 33 transitions. [2020-11-29 18:15:40,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:15:40,297 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 33 transitions. [2020-11-29 18:15:40,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 33 transitions. [2020-11-29 18:15:40,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 18:15:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 18:15:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2020-11-29 18:15:40,324 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 33 transitions. [2020-11-29 18:15:40,324 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 33 transitions. [2020-11-29 18:15:40,324 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 18:15:40,325 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 33 transitions. [2020-11-29 18:15:40,328 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 11 [2020-11-29 18:15:40,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:15:40,328 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:15:40,328 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 18:15:40,329 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:15:40,330 INFO L794 eck$LassoCheckResult]: Stem: 227#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(11);~N~0 := 0; 224#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~ret8, main_#t~mem9, main_#t~mem10, main_#t~ret11, main_#t~mem12, main_#t~mem14, main_#t~post13, main_~i~2, main_#t~ret15, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet7;havoc main_#t~nondet7; 225#L44 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);init_nondet_#in~x.base, init_nondet_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc init_nondet_#t~nondet4, init_nondet_#t~post3, init_nondet_~x.base, init_nondet_~x.offset, init_nondet_~i~0;init_nondet_~x.base, init_nondet_~x.offset := init_nondet_#in~x.base, init_nondet_#in~x.offset;havoc init_nondet_~i~0;init_nondet_~i~0 := 0; 206#L18-3 assume !(init_nondet_~i~0 < ~N~0); 207#L16 havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;rangesum_#in~x.base, rangesum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc rangesum_#res;havoc rangesum_#t~mem6, rangesum_#t~post5, rangesum_~x.base, rangesum_~x.offset, rangesum_~i~1, rangesum_~ret~0, rangesum_~cnt~0;rangesum_~x.base, rangesum_~x.offset := rangesum_#in~x.base, rangesum_#in~x.offset;havoc rangesum_~i~1;havoc rangesum_~ret~0;rangesum_~ret~0 := 0;rangesum_~cnt~0 := 0;rangesum_~i~1 := 0; 210#L29-3 [2020-11-29 18:15:40,330 INFO L796 eck$LassoCheckResult]: Loop: 210#L29-3 assume !!(rangesum_~i~1 < ~N~0); 212#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 218#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 210#L29-3 [2020-11-29 18:15:40,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:40,331 INFO L82 PathProgramCache]: Analyzing trace with hash 28693898, now seen corresponding path program 1 times [2020-11-29 18:15:40,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:40,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887028504] [2020-11-29 18:15:40,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:40,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887028504] [2020-11-29 18:15:40,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:15:40,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:15:40,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829797045] [2020-11-29 18:15:40,410 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 18:15:40,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash 56764, now seen corresponding path program 1 times [2020-11-29 18:15:40,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:40,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488943233] [2020-11-29 18:15:40,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:40,424 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:40,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:40,433 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:40,477 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:15:40,477 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:15:40,477 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:15:40,478 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:15:40,478 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:15:40,478 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:40,478 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:15:40,478 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:15:40,478 INFO L133 ssoRankerPreferences]: Filename of dumped script: rangesum.i_Iteration2_Loop [2020-11-29 18:15:40,478 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:15:40,478 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:15:40,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:40,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:40,535 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:15:40,536 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:40,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:15:40,540 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:40,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:15:40,584 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:15:40,782 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:15:40,783 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:15:40,784 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:15:40,784 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:15:40,784 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:15:40,784 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:15:40,784 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:40,784 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:15:40,784 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:15:40,784 INFO L133 ssoRankerPreferences]: Filename of dumped script: rangesum.i_Iteration2_Loop [2020-11-29 18:15:40,784 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:15:40,784 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:15:40,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:40,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:40,851 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:15:40,852 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:40,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:40,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:40,876 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:40,876 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:40,876 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:40,876 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:40,878 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:40,878 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:40,888 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:40,934 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 18:15:40,935 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:40,938 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:15:40,938 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:15:40,938 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:15:40,938 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_rangesum_~i~1, ~N~0) = -4*ULTIMATE.start_rangesum_~i~1 + 3*~N~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:40,960 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:15:40,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:40,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:15:40,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:41,008 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 18:15:41,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:41,059 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 18:15:41,059 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 33 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-29 18:15:41,099 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 33 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 34 states and 53 transitions. Complement of second has 9 states. [2020-11-29 18:15:41,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-29 18:15:41,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:15:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2020-11-29 18:15:41,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 18:15:41,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:15:41,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-29 18:15:41,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:15:41,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 6 letters. [2020-11-29 18:15:41,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:15:41,103 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 53 transitions. [2020-11-29 18:15:41,104 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 11 [2020-11-29 18:15:41,106 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 31 states and 46 transitions. [2020-11-29 18:15:41,106 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2020-11-29 18:15:41,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-29 18:15:41,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 46 transitions. [2020-11-29 18:15:41,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:15:41,107 INFO L691 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2020-11-29 18:15:41,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 46 transitions. [2020-11-29 18:15:41,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-29 18:15:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 18:15:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-11-29 18:15:41,110 INFO L714 BuchiCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-11-29 18:15:41,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:41,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:15:41,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:15:41,119 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-11-29 18:15:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:41,177 INFO L93 Difference]: Finished difference Result 30 states and 43 transitions. [2020-11-29 18:15:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:15:41,178 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 43 transitions. [2020-11-29 18:15:41,179 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 11 [2020-11-29 18:15:41,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 43 transitions. [2020-11-29 18:15:41,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2020-11-29 18:15:41,180 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2020-11-29 18:15:41,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 43 transitions. [2020-11-29 18:15:41,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:15:41,180 INFO L691 BuchiCegarLoop]: Abstraction has 30 states and 43 transitions. [2020-11-29 18:15:41,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 43 transitions. [2020-11-29 18:15:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-11-29 18:15:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 18:15:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 42 transitions. [2020-11-29 18:15:41,183 INFO L714 BuchiCegarLoop]: Abstraction has 29 states and 42 transitions. [2020-11-29 18:15:41,183 INFO L594 BuchiCegarLoop]: Abstraction has 29 states and 42 transitions. [2020-11-29 18:15:41,183 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 18:15:41,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 42 transitions. [2020-11-29 18:15:41,184 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 11 [2020-11-29 18:15:41,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:15:41,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:15:41,184 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:41,185 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:15:41,185 INFO L794 eck$LassoCheckResult]: Stem: 399#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(11);~N~0 := 0; 396#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~ret8, main_#t~mem9, main_#t~mem10, main_#t~ret11, main_#t~mem12, main_#t~mem14, main_#t~post13, main_~i~2, main_#t~ret15, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet7;havoc main_#t~nondet7; 397#L44 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);init_nondet_#in~x.base, init_nondet_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc init_nondet_#t~nondet4, init_nondet_#t~post3, init_nondet_~x.base, init_nondet_~x.offset, init_nondet_~i~0;init_nondet_~x.base, init_nondet_~x.offset := init_nondet_#in~x.base, init_nondet_#in~x.offset;havoc init_nondet_~i~0;init_nondet_~i~0 := 0; 373#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 374#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 375#L18-3 assume !(init_nondet_~i~0 < ~N~0); 376#L16 havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;rangesum_#in~x.base, rangesum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc rangesum_#res;havoc rangesum_#t~mem6, rangesum_#t~post5, rangesum_~x.base, rangesum_~x.offset, rangesum_~i~1, rangesum_~ret~0, rangesum_~cnt~0;rangesum_~x.base, rangesum_~x.offset := rangesum_#in~x.base, rangesum_#in~x.offset;havoc rangesum_~i~1;havoc rangesum_~ret~0;rangesum_~ret~0 := 0;rangesum_~cnt~0 := 0;rangesum_~i~1 := 0; 386#L29-3 assume !!(rangesum_~i~1 < ~N~0); 379#L30 [2020-11-29 18:15:41,185 INFO L796 eck$LassoCheckResult]: Loop: 379#L30 assume rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2);call rangesum_#t~mem6 := read~int(rangesum_~x.base, rangesum_~x.offset + 4 * rangesum_~i~1, 4);rangesum_~ret~0 := rangesum_~ret~0 + rangesum_#t~mem6;havoc rangesum_#t~mem6;rangesum_~cnt~0 := 1 + rangesum_~cnt~0; 388#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 377#L29-3 assume !!(rangesum_~i~1 < ~N~0); 379#L30 [2020-11-29 18:15:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:41,185 INFO L82 PathProgramCache]: Analyzing trace with hash 123162479, now seen corresponding path program 1 times [2020-11-29 18:15:41,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:41,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856982194] [2020-11-29 18:15:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:41,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856982194] [2020-11-29 18:15:41,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758860689] [2020-11-29 18:15:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:41,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:15:41,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:41,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:15:41,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-29 18:15:41,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147467761] [2020-11-29 18:15:41,341 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 18:15:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:41,341 INFO L82 PathProgramCache]: Analyzing trace with hash 59702, now seen corresponding path program 1 times [2020-11-29 18:15:41,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:41,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947865936] [2020-11-29 18:15:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:41,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:41,361 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:41,363 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:41,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:41,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:15:41,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:15:41,452 INFO L87 Difference]: Start difference. First operand 29 states and 42 transitions. cyclomatic complexity: 19 Second operand 6 states. [2020-11-29 18:15:41,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:41,528 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2020-11-29 18:15:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:15:41,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 45 transitions. [2020-11-29 18:15:41,529 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 11 [2020-11-29 18:15:41,530 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 32 states and 45 transitions. [2020-11-29 18:15:41,530 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2020-11-29 18:15:41,530 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2020-11-29 18:15:41,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 45 transitions. [2020-11-29 18:15:41,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:15:41,531 INFO L691 BuchiCegarLoop]: Abstraction has 32 states and 45 transitions. [2020-11-29 18:15:41,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 45 transitions. [2020-11-29 18:15:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-11-29 18:15:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 18:15:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2020-11-29 18:15:41,533 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-11-29 18:15:41,533 INFO L594 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-11-29 18:15:41,533 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 18:15:41,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 44 transitions. [2020-11-29 18:15:41,534 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 11 [2020-11-29 18:15:41,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:15:41,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:15:41,535 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:41,535 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:15:41,535 INFO L794 eck$LassoCheckResult]: Stem: 491#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(11);~N~0 := 0; 488#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~ret8, main_#t~mem9, main_#t~mem10, main_#t~ret11, main_#t~mem12, main_#t~mem14, main_#t~post13, main_~i~2, main_#t~ret15, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet7;havoc main_#t~nondet7; 489#L44 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);init_nondet_#in~x.base, init_nondet_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc init_nondet_#t~nondet4, init_nondet_#t~post3, init_nondet_~x.base, init_nondet_~x.offset, init_nondet_~i~0;init_nondet_~x.base, init_nondet_~x.offset := init_nondet_#in~x.base, init_nondet_#in~x.offset;havoc init_nondet_~i~0;init_nondet_~i~0 := 0; 464#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 465#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 466#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 467#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 494#L18-3 assume !(init_nondet_~i~0 < ~N~0); 478#L16 havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;rangesum_#in~x.base, rangesum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc rangesum_#res;havoc rangesum_#t~mem6, rangesum_#t~post5, rangesum_~x.base, rangesum_~x.offset, rangesum_~i~1, rangesum_~ret~0, rangesum_~cnt~0;rangesum_~x.base, rangesum_~x.offset := rangesum_#in~x.base, rangesum_#in~x.offset;havoc rangesum_~i~1;havoc rangesum_~ret~0;rangesum_~ret~0 := 0;rangesum_~cnt~0 := 0;rangesum_~i~1 := 0; 479#L29-3 assume !!(rangesum_~i~1 < ~N~0); 470#L30 [2020-11-29 18:15:41,535 INFO L796 eck$LassoCheckResult]: Loop: 470#L30 assume rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2);call rangesum_#t~mem6 := read~int(rangesum_~x.base, rangesum_~x.offset + 4 * rangesum_~i~1, 4);rangesum_~ret~0 := rangesum_~ret~0 + rangesum_#t~mem6;havoc rangesum_#t~mem6;rangesum_~cnt~0 := 1 + rangesum_~cnt~0; 480#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 468#L29-3 assume !!(rangesum_~i~1 < ~N~0); 470#L30 [2020-11-29 18:15:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:41,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1898228851, now seen corresponding path program 2 times [2020-11-29 18:15:41,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:41,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901419974] [2020-11-29 18:15:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:41,590 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:41,627 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:41,632 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:41,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:41,633 INFO L82 PathProgramCache]: Analyzing trace with hash 59702, now seen corresponding path program 2 times [2020-11-29 18:15:41,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:41,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866919097] [2020-11-29 18:15:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:41,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:41,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:41,645 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:41,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:41,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1698716202, now seen corresponding path program 1 times [2020-11-29 18:15:41,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:41,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976280477] [2020-11-29 18:15:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-29 18:15:41,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976280477] [2020-11-29 18:15:41,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:15:41,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:15:41,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090677710] [2020-11-29 18:15:41,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:41,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:15:41,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:15:41,807 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. cyclomatic complexity: 19 Second operand 4 states. [2020-11-29 18:15:41,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:41,880 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-11-29 18:15:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:15:41,881 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 51 transitions. [2020-11-29 18:15:41,882 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 11 [2020-11-29 18:15:41,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 50 transitions. [2020-11-29 18:15:41,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2020-11-29 18:15:41,883 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-11-29 18:15:41,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 50 transitions. [2020-11-29 18:15:41,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:15:41,883 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-11-29 18:15:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 50 transitions. [2020-11-29 18:15:41,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-11-29 18:15:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 18:15:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2020-11-29 18:15:41,886 INFO L714 BuchiCegarLoop]: Abstraction has 36 states and 47 transitions. [2020-11-29 18:15:41,886 INFO L594 BuchiCegarLoop]: Abstraction has 36 states and 47 transitions. [2020-11-29 18:15:41,886 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 18:15:41,887 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 47 transitions. [2020-11-29 18:15:41,887 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 11 [2020-11-29 18:15:41,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:15:41,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:15:41,888 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:41,888 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:15:41,888 INFO L794 eck$LassoCheckResult]: Stem: 572#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(11);~N~0 := 0; 569#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~ret8, main_#t~mem9, main_#t~mem10, main_#t~ret11, main_#t~mem12, main_#t~mem14, main_#t~post13, main_~i~2, main_#t~ret15, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet7;havoc main_#t~nondet7; 570#L44 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);init_nondet_#in~x.base, init_nondet_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc init_nondet_#t~nondet4, init_nondet_#t~post3, init_nondet_~x.base, init_nondet_~x.offset, init_nondet_~i~0;init_nondet_~x.base, init_nondet_~x.offset := init_nondet_#in~x.base, init_nondet_#in~x.offset;havoc init_nondet_~i~0;init_nondet_~i~0 := 0; 544#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 545#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 546#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 547#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 578#L18-3 assume !(init_nondet_~i~0 < ~N~0); 556#L16 havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;rangesum_#in~x.base, rangesum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc rangesum_#res;havoc rangesum_#t~mem6, rangesum_#t~post5, rangesum_~x.base, rangesum_~x.offset, rangesum_~i~1, rangesum_~ret~0, rangesum_~cnt~0;rangesum_~x.base, rangesum_~x.offset := rangesum_#in~x.base, rangesum_#in~x.offset;havoc rangesum_~i~1;havoc rangesum_~ret~0;rangesum_~ret~0 := 0;rangesum_~cnt~0 := 0;rangesum_~i~1 := 0; 548#L29-3 assume !!(rangesum_~i~1 < ~N~0); 549#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 567#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 577#L29-3 assume !!(rangesum_~i~1 < ~N~0); 566#L30 [2020-11-29 18:15:41,888 INFO L796 eck$LassoCheckResult]: Loop: 566#L30 assume rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2);call rangesum_#t~mem6 := read~int(rangesum_~x.base, rangesum_~x.offset + 4 * rangesum_~i~1, 4);rangesum_~ret~0 := rangesum_~ret~0 + rangesum_#t~mem6;havoc rangesum_#t~mem6;rangesum_~cnt~0 := 1 + rangesum_~cnt~0; 558#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 559#L29-3 assume !!(rangesum_~i~1 < ~N~0); 566#L30 [2020-11-29 18:15:41,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:41,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1698718124, now seen corresponding path program 1 times [2020-11-29 18:15:41,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:41,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902233707] [2020-11-29 18:15:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:41,915 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:41,943 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:41,955 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:41,956 INFO L82 PathProgramCache]: Analyzing trace with hash 59702, now seen corresponding path program 3 times [2020-11-29 18:15:41,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:41,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100414337] [2020-11-29 18:15:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:41,965 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:41,968 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:41,969 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:41,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:41,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1087986773, now seen corresponding path program 1 times [2020-11-29 18:15:41,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:41,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828177190] [2020-11-29 18:15:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:42,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828177190] [2020-11-29 18:15:42,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100694533] [2020-11-29 18:15:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:42,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:15:42,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:42,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:15:42,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-11-29 18:15:42,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196015252] [2020-11-29 18:15:42,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:42,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 18:15:42,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:15:42,314 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. cyclomatic complexity: 17 Second operand 13 states. [2020-11-29 18:15:42,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:42,671 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2020-11-29 18:15:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 18:15:42,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 104 transitions. [2020-11-29 18:15:42,673 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 15 [2020-11-29 18:15:42,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 70 states and 90 transitions. [2020-11-29 18:15:42,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2020-11-29 18:15:42,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-11-29 18:15:42,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 90 transitions. [2020-11-29 18:15:42,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:15:42,675 INFO L691 BuchiCegarLoop]: Abstraction has 70 states and 90 transitions. [2020-11-29 18:15:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states and 90 transitions. [2020-11-29 18:15:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2020-11-29 18:15:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 18:15:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2020-11-29 18:15:42,680 INFO L714 BuchiCegarLoop]: Abstraction has 60 states and 78 transitions. [2020-11-29 18:15:42,680 INFO L594 BuchiCegarLoop]: Abstraction has 60 states and 78 transitions. [2020-11-29 18:15:42,680 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 18:15:42,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 78 transitions. [2020-11-29 18:15:42,681 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 13 [2020-11-29 18:15:42,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:15:42,681 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:15:42,682 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:42,682 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:15:42,682 INFO L794 eck$LassoCheckResult]: Stem: 767#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(11);~N~0 := 0; 761#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~ret8, main_#t~mem9, main_#t~mem10, main_#t~ret11, main_#t~mem12, main_#t~mem14, main_#t~post13, main_~i~2, main_#t~ret15, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet7;havoc main_#t~nondet7; 762#L44 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);init_nondet_#in~x.base, init_nondet_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc init_nondet_#t~nondet4, init_nondet_#t~post3, init_nondet_~x.base, init_nondet_~x.offset, init_nondet_~i~0;init_nondet_~x.base, init_nondet_~x.offset := init_nondet_#in~x.base, init_nondet_#in~x.offset;havoc init_nondet_~i~0;init_nondet_~i~0 := 0; 735#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 736#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 737#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 738#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 778#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 779#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 787#L18-3 assume !(init_nondet_~i~0 < ~N~0); 786#L16 havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;rangesum_#in~x.base, rangesum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc rangesum_#res;havoc rangesum_#t~mem6, rangesum_#t~post5, rangesum_~x.base, rangesum_~x.offset, rangesum_~i~1, rangesum_~ret~0, rangesum_~cnt~0;rangesum_~x.base, rangesum_~x.offset := rangesum_#in~x.base, rangesum_#in~x.offset;havoc rangesum_~i~1;havoc rangesum_~ret~0;rangesum_~ret~0 := 0;rangesum_~cnt~0 := 0;rangesum_~i~1 := 0; 785#L29-3 assume !!(rangesum_~i~1 < ~N~0); 759#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 752#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 753#L29-3 assume !!(rangesum_~i~1 < ~N~0); 789#L30 [2020-11-29 18:15:42,682 INFO L796 eck$LassoCheckResult]: Loop: 789#L30 assume rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2);call rangesum_#t~mem6 := read~int(rangesum_~x.base, rangesum_~x.offset + 4 * rangesum_~i~1, 4);rangesum_~ret~0 := rangesum_~ret~0 + rangesum_#t~mem6;havoc rangesum_#t~mem6;rangesum_~cnt~0 := 1 + rangesum_~cnt~0; 791#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 790#L29-3 assume !!(rangesum_~i~1 < ~N~0); 789#L30 [2020-11-29 18:15:42,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:42,682 INFO L82 PathProgramCache]: Analyzing trace with hash -154124210, now seen corresponding path program 2 times [2020-11-29 18:15:42,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:42,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760229510] [2020-11-29 18:15:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:42,695 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:42,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:42,710 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:42,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:42,710 INFO L82 PathProgramCache]: Analyzing trace with hash 59702, now seen corresponding path program 4 times [2020-11-29 18:15:42,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:42,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357574705] [2020-11-29 18:15:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:42,728 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:42,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:42,733 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:42,734 INFO L82 PathProgramCache]: Analyzing trace with hash -194270775, now seen corresponding path program 2 times [2020-11-29 18:15:42,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:42,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386169630] [2020-11-29 18:15:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:42,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386169630] [2020-11-29 18:15:42,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407116890] [2020-11-29 18:15:42,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:42,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:15:42,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:15:42,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:15:42,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:43,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:15:43,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-11-29 18:15:43,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811366955] [2020-11-29 18:15:43,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:43,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 18:15:43,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-11-29 18:15:43,185 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. cyclomatic complexity: 25 Second operand 14 states. [2020-11-29 18:15:43,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:43,655 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-11-29 18:15:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 18:15:43,656 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 89 transitions. [2020-11-29 18:15:43,657 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-29 18:15:43,658 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 73 states and 87 transitions. [2020-11-29 18:15:43,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2020-11-29 18:15:43,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-11-29 18:15:43,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 87 transitions. [2020-11-29 18:15:43,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:15:43,658 INFO L691 BuchiCegarLoop]: Abstraction has 73 states and 87 transitions. [2020-11-29 18:15:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states and 87 transitions. [2020-11-29 18:15:43,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2020-11-29 18:15:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 18:15:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-11-29 18:15:43,670 INFO L714 BuchiCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-11-29 18:15:43,670 INFO L594 BuchiCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-11-29 18:15:43,671 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 18:15:43,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 82 transitions. [2020-11-29 18:15:43,672 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 13 [2020-11-29 18:15:43,673 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:15:43,673 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:15:43,673 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 18:15:43,674 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:15:43,674 INFO L794 eck$LassoCheckResult]: Stem: 983#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(11);~N~0 := 0; 978#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~ret8, main_#t~mem9, main_#t~mem10, main_#t~ret11, main_#t~mem12, main_#t~mem14, main_#t~post13, main_~i~2, main_#t~ret15, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet7;havoc main_#t~nondet7; 979#L44 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);init_nondet_#in~x.base, init_nondet_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc init_nondet_#t~nondet4, init_nondet_#t~post3, init_nondet_~x.base, init_nondet_~x.offset, init_nondet_~i~0;init_nondet_~x.base, init_nondet_~x.offset := init_nondet_#in~x.base, init_nondet_#in~x.offset;havoc init_nondet_~i~0;init_nondet_~i~0 := 0; 954#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 955#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 956#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 957#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 1016#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 992#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 991#L18-3 assume !(init_nondet_~i~0 < ~N~0); 967#L16 havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;rangesum_#in~x.base, rangesum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc rangesum_#res;havoc rangesum_#t~mem6, rangesum_#t~post5, rangesum_~x.base, rangesum_~x.offset, rangesum_~i~1, rangesum_~ret~0, rangesum_~cnt~0;rangesum_~x.base, rangesum_~x.offset := rangesum_#in~x.base, rangesum_#in~x.offset;havoc rangesum_~i~1;havoc rangesum_~ret~0;rangesum_~ret~0 := 0;rangesum_~cnt~0 := 0;rangesum_~i~1 := 0; 958#L29-3 assume !!(rangesum_~i~1 < ~N~0); 959#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 970#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 960#L29-3 assume !!(rangesum_~i~1 < ~N~0); 961#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 1012#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 1008#L29-3 assume !!(rangesum_~i~1 < ~N~0); 1007#L30 [2020-11-29 18:15:43,676 INFO L796 eck$LassoCheckResult]: Loop: 1007#L30 assume rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2);call rangesum_#t~mem6 := read~int(rangesum_~x.base, rangesum_~x.offset + 4 * rangesum_~i~1, 4);rangesum_~ret~0 := rangesum_~ret~0 + rangesum_#t~mem6;havoc rangesum_#t~mem6;rangesum_~cnt~0 := 1 + rangesum_~cnt~0; 1011#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 1006#L29-3 assume !!(rangesum_~i~1 < ~N~0); 1007#L30 [2020-11-29 18:15:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:43,676 INFO L82 PathProgramCache]: Analyzing trace with hash -194268853, now seen corresponding path program 3 times [2020-11-29 18:15:43,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:43,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714563811] [2020-11-29 18:15:43,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:43,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:43,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:43,732 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:43,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:43,735 INFO L82 PathProgramCache]: Analyzing trace with hash 59702, now seen corresponding path program 5 times [2020-11-29 18:15:43,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:43,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507089007] [2020-11-29 18:15:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:43,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:43,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:43,745 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:43,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:43,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2142422100, now seen corresponding path program 3 times [2020-11-29 18:15:43,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:43,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423823572] [2020-11-29 18:15:43,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 18:15:43,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423823572] [2020-11-29 18:15:43,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770629391] [2020-11-29 18:15:43,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:43,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-29 18:15:43,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:15:43,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 18:15:43,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:44,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:15:44,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2020-11-29 18:15:44,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267300782] [2020-11-29 18:15:44,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:44,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 18:15:44,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-11-29 18:15:44,185 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. cyclomatic complexity: 21 Second operand 15 states. [2020-11-29 18:15:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:44,719 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-11-29 18:15:44,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 18:15:44,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 141 transitions. [2020-11-29 18:15:44,721 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 17 [2020-11-29 18:15:44,723 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 104 states and 125 transitions. [2020-11-29 18:15:44,723 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2020-11-29 18:15:44,723 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 86 [2020-11-29 18:15:44,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 125 transitions. [2020-11-29 18:15:44,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:15:44,724 INFO L691 BuchiCegarLoop]: Abstraction has 104 states and 125 transitions. [2020-11-29 18:15:44,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 125 transitions. [2020-11-29 18:15:44,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2020-11-29 18:15:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-29 18:15:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2020-11-29 18:15:44,733 INFO L714 BuchiCegarLoop]: Abstraction has 91 states and 109 transitions. [2020-11-29 18:15:44,733 INFO L594 BuchiCegarLoop]: Abstraction has 91 states and 109 transitions. [2020-11-29 18:15:44,733 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 18:15:44,733 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states and 109 transitions. [2020-11-29 18:15:44,734 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 13 [2020-11-29 18:15:44,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:15:44,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:15:44,735 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 18:15:44,735 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:15:44,735 INFO L794 eck$LassoCheckResult]: Stem: 1276#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(11);~N~0 := 0; 1270#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~ret8, main_#t~mem9, main_#t~mem10, main_#t~ret11, main_#t~mem12, main_#t~mem14, main_#t~post13, main_~i~2, main_#t~ret15, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet7;havoc main_#t~nondet7; 1271#L44 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);init_nondet_#in~x.base, init_nondet_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc init_nondet_#t~nondet4, init_nondet_#t~post3, init_nondet_~x.base, init_nondet_~x.offset, init_nondet_~i~0;init_nondet_~x.base, init_nondet_~x.offset := init_nondet_#in~x.base, init_nondet_#in~x.offset;havoc init_nondet_~i~0;init_nondet_~i~0 := 0; 1243#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 1244#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 1245#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 1246#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 1308#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 1255#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 1256#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 1303#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 1302#L18-3 assume !(init_nondet_~i~0 < ~N~0); 1301#L16 havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;rangesum_#in~x.base, rangesum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc rangesum_#res;havoc rangesum_#t~mem6, rangesum_#t~post5, rangesum_~x.base, rangesum_~x.offset, rangesum_~i~1, rangesum_~ret~0, rangesum_~cnt~0;rangesum_~x.base, rangesum_~x.offset := rangesum_#in~x.base, rangesum_#in~x.offset;havoc rangesum_~i~1;havoc rangesum_~ret~0;rangesum_~ret~0 := 0;rangesum_~cnt~0 := 0;rangesum_~i~1 := 0; 1300#L29-3 assume !!(rangesum_~i~1 < ~N~0); 1268#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 1261#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 1262#L29-3 assume !!(rangesum_~i~1 < ~N~0); 1299#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 1297#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 1294#L29-3 assume !!(rangesum_~i~1 < ~N~0); 1295#L30 [2020-11-29 18:15:44,735 INFO L796 eck$LassoCheckResult]: Loop: 1295#L30 assume rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2);call rangesum_#t~mem6 := read~int(rangesum_~x.base, rangesum_~x.offset + 4 * rangesum_~i~1, 4);rangesum_~ret~0 := rangesum_~ret~0 + rangesum_#t~mem6;havoc rangesum_#t~mem6;rangesum_~cnt~0 := 1 + rangesum_~cnt~0; 1298#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 1296#L29-3 assume !!(rangesum_~i~1 < ~N~0); 1295#L30 [2020-11-29 18:15:44,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:44,736 INFO L82 PathProgramCache]: Analyzing trace with hash -326653975, now seen corresponding path program 4 times [2020-11-29 18:15:44,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:44,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609714396] [2020-11-29 18:15:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:44,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:44,778 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:44,783 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:44,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:44,783 INFO L82 PathProgramCache]: Analyzing trace with hash 59702, now seen corresponding path program 6 times [2020-11-29 18:15:44,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:44,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276394721] [2020-11-29 18:15:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:44,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:44,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:44,791 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:44,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1047353422, now seen corresponding path program 4 times [2020-11-29 18:15:44,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:44,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17041483] [2020-11-29 18:15:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:44,895 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-29 18:15:44,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17041483] [2020-11-29 18:15:44,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924496913] [2020-11-29 18:15:44,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:44,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:15:44,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:15:44,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 18:15:44,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:45,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:15:45,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2020-11-29 18:15:45,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472084472] [2020-11-29 18:15:45,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:45,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 18:15:45,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-11-29 18:15:45,216 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. cyclomatic complexity: 25 Second operand 18 states. [2020-11-29 18:15:46,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:46,087 INFO L93 Difference]: Finished difference Result 164 states and 191 transitions. [2020-11-29 18:15:46,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-29 18:15:46,088 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 191 transitions. [2020-11-29 18:15:46,090 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 23 [2020-11-29 18:15:46,092 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 158 states and 185 transitions. [2020-11-29 18:15:46,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 124 [2020-11-29 18:15:46,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 124 [2020-11-29 18:15:46,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 158 states and 185 transitions. [2020-11-29 18:15:46,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:15:46,093 INFO L691 BuchiCegarLoop]: Abstraction has 158 states and 185 transitions. [2020-11-29 18:15:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states and 185 transitions. [2020-11-29 18:15:46,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 139. [2020-11-29 18:15:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-29 18:15:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 165 transitions. [2020-11-29 18:15:46,102 INFO L714 BuchiCegarLoop]: Abstraction has 139 states and 165 transitions. [2020-11-29 18:15:46,102 INFO L594 BuchiCegarLoop]: Abstraction has 139 states and 165 transitions. [2020-11-29 18:15:46,102 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-29 18:15:46,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 139 states and 165 transitions. [2020-11-29 18:15:46,108 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 21 [2020-11-29 18:15:46,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:15:46,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:15:46,109 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2020-11-29 18:15:46,110 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:15:46,110 INFO L794 eck$LassoCheckResult]: Stem: 1661#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(11);~N~0 := 0; 1657#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~ret8, main_#t~mem9, main_#t~mem10, main_#t~ret11, main_#t~mem12, main_#t~mem14, main_#t~post13, main_~i~2, main_#t~ret15, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet7;havoc main_#t~nondet7; 1658#L44 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);init_nondet_#in~x.base, init_nondet_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc init_nondet_#t~nondet4, init_nondet_#t~post3, init_nondet_~x.base, init_nondet_~x.offset, init_nondet_~i~0;init_nondet_~x.base, init_nondet_~x.offset := init_nondet_#in~x.base, init_nondet_#in~x.offset;havoc init_nondet_~i~0;init_nondet_~i~0 := 0; 1631#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 1632#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 1633#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 1634#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 1709#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 1710#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 1721#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 1675#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 1676#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 1671#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 1669#L18-3 assume !(init_nondet_~i~0 < ~N~0); 1670#L16 havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;rangesum_#in~x.base, rangesum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc rangesum_#res;havoc rangesum_#t~mem6, rangesum_#t~post5, rangesum_~x.base, rangesum_~x.offset, rangesum_~i~1, rangesum_~ret~0, rangesum_~cnt~0;rangesum_~x.base, rangesum_~x.offset := rangesum_#in~x.base, rangesum_#in~x.offset;havoc rangesum_~i~1;havoc rangesum_~ret~0;rangesum_~ret~0 := 0;rangesum_~cnt~0 := 0;rangesum_~i~1 := 0; 1635#L29-3 assume !!(rangesum_~i~1 < ~N~0); 1636#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 1648#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 1637#L29-3 assume !!(rangesum_~i~1 < ~N~0); 1638#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 1739#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 1740#L29-3 assume !!(rangesum_~i~1 < ~N~0); 1731#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 1730#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 1723#L29-3 assume !!(rangesum_~i~1 < ~N~0); 1726#L30 [2020-11-29 18:15:46,110 INFO L796 eck$LassoCheckResult]: Loop: 1726#L30 assume rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2);call rangesum_#t~mem6 := read~int(rangesum_~x.base, rangesum_~x.offset + 4 * rangesum_~i~1, 4);rangesum_~ret~0 := rangesum_~ret~0 + rangesum_#t~mem6;havoc rangesum_#t~mem6;rangesum_~cnt~0 := 1 + rangesum_~cnt~0; 1646#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 1647#L29-3 assume !!(rangesum_~i~1 < ~N~0); 1726#L30 [2020-11-29 18:15:46,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:46,110 INFO L82 PathProgramCache]: Analyzing trace with hash -185017358, now seen corresponding path program 5 times [2020-11-29 18:15:46,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:46,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574136430] [2020-11-29 18:15:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:46,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:46,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:46,153 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:46,155 INFO L82 PathProgramCache]: Analyzing trace with hash 59702, now seen corresponding path program 7 times [2020-11-29 18:15:46,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:46,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23342068] [2020-11-29 18:15:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:46,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:46,164 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:46,166 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:46,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1409041499, now seen corresponding path program 5 times [2020-11-29 18:15:46,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:46,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598184116] [2020-11-29 18:15:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:46,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:46,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:46,215 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:47,578 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 209 DAG size of output: 152 [2020-11-29 18:15:47,965 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-11-29 18:15:47,967 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:15:47,968 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:15:47,968 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:15:47,968 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:15:47,968 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:15:47,968 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:47,968 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:15:47,968 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:15:47,968 INFO L133 ssoRankerPreferences]: Filename of dumped script: rangesum.i_Iteration9_Lasso [2020-11-29 18:15:47,968 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:15:47,968 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:15:47,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:47,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,289 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-11-29 18:15:48,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:48,870 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:15:48,870 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:48,886 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:48,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:48,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:48,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:48,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:48,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:48,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:48,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:48,889 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:48,911 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:48,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:48,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:48,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:48,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:48,916 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:48,916 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:15:48,936 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:48,969 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:48,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:48,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:48,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:48,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:48,974 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:48,974 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:15:48,982 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:49,003 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:49,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:49,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:49,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:49,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:49,006 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:49,006 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:15:49,008 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:49,031 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:49,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:49,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:49,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:49,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:49,033 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:49,033 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:15:49,036 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:49,059 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:49,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:49,060 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:49,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:49,060 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:49,062 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:49,062 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:15:49,064 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:49,086 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:49,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:49,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:49,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:49,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:49,088 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:49,088 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:15:49,091 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:15:49,113 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:49,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:49,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:49,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:49,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:49,117 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:49,117 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:15:49,126 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:49,151 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:49,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:49,155 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:15:49,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:49,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:49,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:49,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:15:49,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:15:49,165 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:49,187 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:15:49,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:15:49,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:15:49,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:15:49,189 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:15:49,197 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:15:49,198 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:15:49,209 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:15:49,234 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-11-29 18:15:49,234 INFO L444 ModelExtractionUtils]: 19 out of 34 variables were initially zero. Simplification set additionally 12 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c3c1c6-80a2-4ccd-821f-2e66d2f437bf/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:49,236 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:15:49,238 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 18:15:49,238 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:15:49,238 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_rangesum_~i~1, ~N~0) = -1*ULTIMATE.start_rangesum_~i~1 + 1*~N~0 Supporting invariants [] [2020-11-29 18:15:49,332 INFO L297 tatePredicateManager]: 11 out of 11 supporting invariants were superfluous and have been removed [2020-11-29 18:15:49,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:49,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:15:49,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:49,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:15:49,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:49,384 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 [2020-11-29 18:15:49,384 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 139 states and 165 transitions. cyclomatic complexity: 37 Second operand 4 states. [2020-11-29 18:15:49,430 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 139 states and 165 transitions. cyclomatic complexity: 37. Second operand 4 states. Result 178 states and 215 transitions. Complement of second has 7 states. [2020-11-29 18:15:49,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 18:15:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:15:49,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-29 18:15:49,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 25 letters. Loop has 3 letters. [2020-11-29 18:15:49,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:15:49,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 28 letters. Loop has 3 letters. [2020-11-29 18:15:49,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:15:49,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 25 letters. Loop has 6 letters. [2020-11-29 18:15:49,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:15:49,433 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 215 transitions. [2020-11-29 18:15:49,435 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 18 [2020-11-29 18:15:49,436 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 148 states and 176 transitions. [2020-11-29 18:15:49,436 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 96 [2020-11-29 18:15:49,437 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 114 [2020-11-29 18:15:49,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 176 transitions. [2020-11-29 18:15:49,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:15:49,437 INFO L691 BuchiCegarLoop]: Abstraction has 148 states and 176 transitions. [2020-11-29 18:15:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states and 176 transitions. [2020-11-29 18:15:49,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 142. [2020-11-29 18:15:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-29 18:15:49,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 170 transitions. [2020-11-29 18:15:49,456 INFO L714 BuchiCegarLoop]: Abstraction has 142 states and 170 transitions. [2020-11-29 18:15:49,456 INFO L594 BuchiCegarLoop]: Abstraction has 142 states and 170 transitions. [2020-11-29 18:15:49,456 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-29 18:15:49,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 142 states and 170 transitions. [2020-11-29 18:15:49,458 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 18 [2020-11-29 18:15:49,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:15:49,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:15:49,459 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:49,459 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 18:15:49,459 INFO L794 eck$LassoCheckResult]: Stem: 2129#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(11);~N~0 := 0; 2126#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~ret8, main_#t~mem9, main_#t~mem10, main_#t~ret11, main_#t~mem12, main_#t~mem14, main_#t~post13, main_~i~2, main_#t~ret15, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet7;havoc main_#t~nondet7; 2127#L44 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);init_nondet_#in~x.base, init_nondet_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc init_nondet_#t~nondet4, init_nondet_#t~post3, init_nondet_~x.base, init_nondet_~x.offset, init_nondet_~i~0;init_nondet_~x.base, init_nondet_~x.offset := init_nondet_#in~x.base, init_nondet_#in~x.offset;havoc init_nondet_~i~0;init_nondet_~i~0 := 0; 2100#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 2101#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 2171#L18-3 assume !!(init_nondet_~i~0 < ~N~0);call write~int(init_nondet_#t~nondet4, init_nondet_~x.base, init_nondet_~x.offset + 4 * init_nondet_~i~0, 4);havoc init_nondet_#t~nondet4; 2170#L18-2 init_nondet_#t~post3 := init_nondet_~i~0;init_nondet_~i~0 := 1 + init_nondet_#t~post3;havoc init_nondet_#t~post3; 2168#L18-3 assume !(init_nondet_~i~0 < ~N~0); 2167#L16 havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;rangesum_#in~x.base, rangesum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc rangesum_#res;havoc rangesum_#t~mem6, rangesum_#t~post5, rangesum_~x.base, rangesum_~x.offset, rangesum_~i~1, rangesum_~ret~0, rangesum_~cnt~0;rangesum_~x.base, rangesum_~x.offset := rangesum_#in~x.base, rangesum_#in~x.offset;havoc rangesum_~i~1;havoc rangesum_~ret~0;rangesum_~ret~0 := 0;rangesum_~cnt~0 := 0;rangesum_~i~1 := 0; 2166#L29-3 assume !!(rangesum_~i~1 < ~N~0); 2165#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 2164#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 2163#L29-3 assume !!(rangesum_~i~1 < ~N~0); 2162#L30 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 2161#L29-2 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 2159#L29-3 assume !(rangesum_~i~1 < ~N~0); 2157#L29-4 assume !(0 != rangesum_~cnt~0);rangesum_#res := 0; 2155#L38 main_#t~ret8 := rangesum_#res;main_~ret~1 := main_#t~ret8;havoc main_#t~ret8;call main_#t~mem9 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem9;havoc main_#t~mem9;call main_#t~mem10 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem10, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem10;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);rangesum_#in~x.base, rangesum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc rangesum_#res;havoc rangesum_#t~mem6, rangesum_#t~post5, rangesum_~x.base, rangesum_~x.offset, rangesum_~i~1, rangesum_~ret~0, rangesum_~cnt~0;rangesum_~x.base, rangesum_~x.offset := rangesum_#in~x.base, rangesum_#in~x.offset;havoc rangesum_~i~1;havoc rangesum_~ret~0;rangesum_~ret~0 := 0;rangesum_~cnt~0 := 0;rangesum_~i~1 := 0; 2153#L29-8 assume !!(rangesum_~i~1 < ~N~0); 2151#L30-2 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 2149#L29-7 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 2147#L29-8 assume !!(rangesum_~i~1 < ~N~0); 2145#L30-2 assume !(rangesum_~i~1 > (if ~N~0 < 0 && 0 != ~N~0 % 2 then 1 + ~N~0 / 2 else ~N~0 / 2)); 2144#L29-7 rangesum_#t~post5 := rangesum_~i~1;rangesum_~i~1 := 1 + rangesum_#t~post5;havoc rangesum_#t~post5; 2140#L29-8 assume !(rangesum_~i~1 < ~N~0); 2139#L29-9 assume !(0 != rangesum_~cnt~0);rangesum_#res := 0; 2138#L38-1 main_#t~ret11 := rangesum_#res;main_~ret2~0 := main_#t~ret11;havoc main_#t~ret11;call main_#t~mem12 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem12;havoc main_#t~mem12;main_~i~2 := 0; 2132#L57-3 [2020-11-29 18:15:49,459 INFO L796 eck$LassoCheckResult]: Loop: 2132#L57-3 assume !!(main_~i~2 < ~N~0 - 1);call main_#t~mem14 := read~int(main_~#x~0.base, main_~#x~0.offset + 4 * (1 + main_~i~2), 4);call write~int(main_#t~mem14, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~2, 4);havoc main_#t~mem14; 2133#L57-2 main_#t~post13 := main_~i~2;main_~i~2 := 1 + main_#t~post13;havoc main_#t~post13; 2132#L57-3 [2020-11-29 18:15:49,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:49,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1751120697, now seen corresponding path program 1 times [2020-11-29 18:15:49,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:49,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669099343] [2020-11-29 18:15:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:49,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:49,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:49,502 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:49,503 INFO L82 PathProgramCache]: Analyzing trace with hash 3427, now seen corresponding path program 1 times [2020-11-29 18:15:49,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:49,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827674823] [2020-11-29 18:15:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:49,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:49,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:49,509 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:49,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:49,509 INFO L82 PathProgramCache]: Analyzing trace with hash 800192681, now seen corresponding path program 1 times [2020-11-29 18:15:49,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:49,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799285902] [2020-11-29 18:15:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:49,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:49,533 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:49,538 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:50,732 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 215 DAG size of output: 178 [2020-11-29 18:15:56,171 WARN L193 SmtUtils]: Spent 5.41 s on a formula simplification. DAG size of input: 168 DAG size of output: 147 [2020-11-29 18:15:56,178 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:15:56,178 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:15:56,178 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:15:56,178 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:15:56,178 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:15:56,178 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:15:56,178 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:15:56,178 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:15:56,179 INFO L133 ssoRankerPreferences]: Filename of dumped script: rangesum.i_Iteration10_Lasso [2020-11-29 18:15:56,179 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:15:56,179 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:15:56,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:56,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:56,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:56,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:56,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:56,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:56,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:56,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:56,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:56,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:15:56,548 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: MapEliminator tries to combine Int and (Array Int Int) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.indexEqualityInequalityImpliesValueEquality(MapEliminator.java:850) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceSelectStoreTerm(MapEliminator.java:592) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceStoreTerms(MapEliminator.java:542) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.getRewrittenTransFormula(MapEliminator.java:330) at de.uni_freiburg.informatik.ultimate.lassoranker.preprocessors.MapEliminationLassoPreprocessor.process(MapEliminationLassoPreprocessor.java:109) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.applyPreprocessor(LassoBuilder.java:154) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.preprocess(LassoBuilder.java:262) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.preprocess(LassoAnalysis.java:278) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.(LassoAnalysis.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:612) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.access$16(LassoCheck.java:539) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:957) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:865) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:382) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-29 18:15:56,551 INFO L168 Benchmark]: Toolchain (without parser) took 20588.13 ms. Allocated memory was 96.5 MB in the beginning and 207.6 MB in the end (delta: 111.1 MB). Free memory was 66.5 MB in the beginning and 102.7 MB in the end (delta: -36.1 MB). Peak memory consumption was 115.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:56,551 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 52.1 MB in the beginning and 52.1 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:15:56,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.75 ms. Allocated memory is still 96.5 MB. Free memory was 66.1 MB in the beginning and 74.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:56,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.03 ms. Allocated memory is still 96.5 MB. Free memory was 74.2 MB in the beginning and 72.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:56,552 INFO L168 Benchmark]: Boogie Preprocessor took 30.07 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:56,555 INFO L168 Benchmark]: RCFGBuilder took 469.56 ms. Allocated memory is still 96.5 MB. Free memory was 70.5 MB in the beginning and 50.1 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:56,555 INFO L168 Benchmark]: BuchiAutomizer took 19660.12 ms. Allocated memory was 96.5 MB in the beginning and 207.6 MB in the end (delta: 111.1 MB). Free memory was 50.1 MB in the beginning and 102.7 MB in the end (delta: -52.6 MB). Peak memory consumption was 101.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:56,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 52.1 MB in the beginning and 52.1 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.75 ms. Allocated memory is still 96.5 MB. Free memory was 66.1 MB in the beginning and 74.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.03 ms. Allocated memory is still 96.5 MB. Free memory was 74.2 MB in the beginning and 72.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.07 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 469.56 ms. Allocated memory is still 96.5 MB. Free memory was 70.5 MB in the beginning and 50.1 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 19660.12 ms. Allocated memory was 96.5 MB in the beginning and 207.6 MB in the end (delta: 111.1 MB). Free memory was 50.1 MB in the beginning and 102.7 MB in the end (delta: -52.6 MB). Peak memory consumption was 101.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: AssertionError: MapEliminator tries to combine Int and (Array Int Int) de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: MapEliminator tries to combine Int and (Array Int Int): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.indexEqualityInequalityImpliesValueEquality(MapEliminator.java:850) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...