./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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 64bit --witnessprinter.graph.data.programhash 18edad3aefc49839189b8c997aba3dd32264f7ca ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 14:53:14,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:53:14,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:53:14,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:53:14,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:53:14,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:53:14,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:53:14,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:53:14,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:53:14,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:53:14,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:53:14,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:53:14,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:53:14,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:53:14,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:53:14,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:53:14,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:53:14,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:53:14,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:53:14,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:53:14,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:53:14,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:53:14,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:53:14,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:53:14,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:53:14,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:53:14,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:53:14,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:53:14,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:53:14,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:53:14,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:53:14,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:53:14,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:53:14,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:53:14,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:53:14,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:53:14,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:53:14,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:53:14,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:53:14,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:53:14,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:53:14,793 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-12-01 14:53:14,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:53:14,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:53:14,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:53:14,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:53:14,818 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:53:14,818 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-12-01 14:53:14,819 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-12-01 14:53:14,819 INFO L138 SettingsManager]: * Use old map elimination=false [2020-12-01 14:53:14,819 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-12-01 14:53:14,819 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-12-01 14:53:14,819 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-12-01 14:53:14,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:53:14,820 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 14:53:14,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:53:14,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:53:14,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-12-01 14:53:14,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-12-01 14:53:14,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-12-01 14:53:14,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:53:14,821 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-12-01 14:53:14,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:53:14,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-12-01 14:53:14,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:53:14,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:53:14,822 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-12-01 14:53:14,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:53:14,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:53:14,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:53:14,823 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-12-01 14:53:14,824 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-12-01 14:53:14,825 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_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18edad3aefc49839189b8c997aba3dd32264f7ca [2020-12-01 14:53:15,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:53:15,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:53:15,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:53:15,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:53:15,070 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:53:15,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/../../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i [2020-12-01 14:53:15,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/data/253b9219b/eceec0d3e28a479e90e5e315b19f63b0/FLAG0c5531842 [2020-12-01 14:53:15,632 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:53:15,632 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i [2020-12-01 14:53:15,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/data/253b9219b/eceec0d3e28a479e90e5e315b19f63b0/FLAG0c5531842 [2020-12-01 14:53:15,959 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/data/253b9219b/eceec0d3e28a479e90e5e315b19f63b0 [2020-12-01 14:53:15,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:53:15,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:53:15,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:53:15,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:53:15,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:53:15,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:53:15" (1/1) ... [2020-12-01 14:53:15,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33764639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:15, skipping insertion in model container [2020-12-01 14:53:15,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:53:15" (1/1) ... [2020-12-01 14:53:15,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:53:16,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:53:16,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:53:16,359 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:53:16,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:53:16,481 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:53:16,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16 WrapperNode [2020-12-01 14:53:16,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:53:16,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:53:16,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:53:16,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:53:16,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16" (1/1) ... [2020-12-01 14:53:16,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16" (1/1) ... [2020-12-01 14:53:16,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:53:16,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:53:16,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:53:16,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:53:16,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16" (1/1) ... [2020-12-01 14:53:16,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16" (1/1) ... [2020-12-01 14:53:16,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16" (1/1) ... [2020-12-01 14:53:16,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16" (1/1) ... [2020-12-01 14:53:16,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16" (1/1) ... [2020-12-01 14:53:16,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16" (1/1) ... [2020-12-01 14:53:16,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16" (1/1) ... [2020-12-01 14:53:16,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:53:16,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:53:16,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:53:16,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:53:16,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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 [2020-12-01 14:53:16,641 INFO L130 BoogieDeclarations]: Found specification of procedure new_ll [2020-12-01 14:53:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure new_ll [2020-12-01 14:53:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 14:53:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 14:53:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 14:53:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 14:53:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure length [2020-12-01 14:53:16,645 INFO L138 BoogieDeclarations]: Found implementation of procedure length [2020-12-01 14:53:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:53:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:53:16,891 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:53:16,891 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-01 14:53:16,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:53:16 BoogieIcfgContainer [2020-12-01 14:53:16,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:53:16,894 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-12-01 14:53:16,894 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-12-01 14:53:16,897 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-12-01 14:53:16,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:53:16,898 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 02:53:15" (1/3) ... [2020-12-01 14:53:16,903 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1db87c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 02:53:16, skipping insertion in model container [2020-12-01 14:53:16,903 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:53:16,903 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:16" (2/3) ... [2020-12-01 14:53:16,904 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1db87c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 02:53:16, skipping insertion in model container [2020-12-01 14:53:16,904 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:53:16,904 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:53:16" (3/3) ... [2020-12-01 14:53:16,905 INFO L389 chiAutomizerObserver]: Analyzing ICFG ll_append-alloca-2.i [2020-12-01 14:53:16,993 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-12-01 14:53:17,006 INFO L360 BuchiCegarLoop]: Hoare is false [2020-12-01 14:53:17,006 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-12-01 14:53:17,006 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:53:17,007 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:53:17,007 INFO L364 BuchiCegarLoop]: Difference is false [2020-12-01 14:53:17,007 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:53:17,007 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-12-01 14:53:17,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-12-01 14:53:17,072 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2020-12-01 14:53:17,072 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:53:17,072 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:53:17,079 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-12-01 14:53:17,079 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 14:53:17,079 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-12-01 14:53:17,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-12-01 14:53:17,087 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2020-12-01 14:53:17,087 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:53:17,088 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:53:17,088 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-12-01 14:53:17,088 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 14:53:17,096 INFO L794 eck$LassoCheckResult]: Stem: 23#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 12#L574true assume !(main_~n~0 < 1); 7#L577true call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 15#new_llENTRYtrue [2020-12-01 14:53:17,097 INFO L796 eck$LassoCheckResult]: Loop: 15#new_llENTRYtrue ~n := #in~n; 29#L548true assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 22#L552true call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 15#new_llENTRYtrue [2020-12-01 14:53:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:17,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1418244, now seen corresponding path program 1 times [2020-12-01 14:53:17,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:17,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219588379] [2020-12-01 14:53:17,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:17,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:17,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:17,233 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:53:17,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:17,234 INFO L82 PathProgramCache]: Analyzing trace with hash 29967, now seen corresponding path program 1 times [2020-12-01 14:53:17,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:17,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193061447] [2020-12-01 14:53:17,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:17,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:17,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:17,282 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:53:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:17,284 INFO L82 PathProgramCache]: Analyzing trace with hash -698765780, now seen corresponding path program 1 times [2020-12-01 14:53:17,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:17,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218416914] [2020-12-01 14:53:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:17,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:17,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:17,341 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:53:17,561 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-12-01 14:53:18,125 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 14:53:18,127 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 14:53:18,128 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 14:53:18,128 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 14:53:18,129 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 14:53:18,129 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:53:18,129 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 14:53:18,129 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 14:53:18,129 INFO L133 ssoRankerPreferences]: Filename of dumped script: ll_append-alloca-2.i_Iteration1_Lasso [2020-12-01 14:53:18,130 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 14:53:18,131 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 14:53:18,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:53:18,561 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 14:53:18,571 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:53:18,587 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 [2020-12-01 14:53:18,589 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:18,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:18,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:18,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:18,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:18,593 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:18,594 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:53:18,602 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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 [2020-12-01 14:53:18,625 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 [2020-12-01 14:53:18,626 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:18,626 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:18,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:18,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:18,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:18,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:18,628 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:53:18,653 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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) [2020-12-01 14:53:18,692 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 [2020-12-01 14:53:18,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:18,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:18,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:18,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:18,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:18,696 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:18,696 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:53:18,709 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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) [2020-12-01 14:53:18,748 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:53:18,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:18,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:18,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:18,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:18,750 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:18,751 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:18,752 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:53:18,768 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:53:18,803 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 [2020-12-01 14:53:18,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:18,805 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:18,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:18,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:18,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:18,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:18,806 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:53:18,830 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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) [2020-12-01 14:53:18,868 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 [2020-12-01 14:53:18,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:18,869 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:18,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:18,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:18,870 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:18,872 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:18,872 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:53:18,894 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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 [2020-12-01 14:53:18,927 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 [2020-12-01 14:53:18,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:18,929 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:18,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:18,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:18,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:18,930 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:18,930 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:53:18,935 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:53:18,958 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 [2020-12-01 14:53:18,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:18,960 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:18,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:18,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:18,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:18,961 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:18,961 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:53:18,986 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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) [2020-12-01 14:53:19,027 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 [2020-12-01 14:53:19,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:19,029 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:19,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:19,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:19,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:19,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:19,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:53:19,038 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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) [2020-12-01 14:53:19,080 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 [2020-12-01 14:53:19,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:19,082 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:19,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:19,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:19,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:19,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:19,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:53:19,103 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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) [2020-12-01 14:53:19,143 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 [2020-12-01 14:53:19,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:19,144 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:19,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:19,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:19,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:19,145 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:19,145 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 [2020-12-01 14:53:19,174 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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 [2020-12-01 14:53:19,210 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 [2020-12-01 14:53:19,212 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:19,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:19,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:19,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:19,213 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:19,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:19,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:53:19,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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 [2020-12-01 14:53:19,248 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 [2020-12-01 14:53:19,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:19,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:19,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:19,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:19,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:19,250 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:19,250 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:53:19,251 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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 [2020-12-01 14:53:19,274 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 [2020-12-01 14:53:19,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:19,275 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:19,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:19,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:19,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:19,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:19,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:53:19,279 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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 [2020-12-01 14:53:19,301 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 [2020-12-01 14:53:19,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:19,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:19,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:19,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:19,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:19,304 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:19,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:53:19,325 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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 [2020-12-01 14:53:19,345 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 [2020-12-01 14:53:19,347 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:19,347 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:19,347 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:19,347 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:19,350 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 14:53:19,350 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 14:53:19,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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 [2020-12-01 14:53:19,396 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 [2020-12-01 14:53:19,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:19,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:53:19,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:19,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:53:19,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:19,399 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:53:19,399 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:53:19,422 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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 [2020-12-01 14:53:19,451 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 [2020-12-01 14:53:19,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:53:19,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:53:19,453 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-12-01 14:53:19,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:53:19,463 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-12-01 14:53:19,464 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-12-01 14:53:19,525 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 14:53:19,571 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-12-01 14:53:19,571 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/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) [2020-12-01 14:53:19,586 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:53:19,611 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-12-01 14:53:19,611 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 14:53:19,611 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(new_ll_#in~n) = 1*new_ll_#in~n Supporting invariants [1*new_ll_#in~n >= 0] [2020-12-01 14:53:19,647 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-12-01 14:53:19,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:19,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 14:53:19,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:53:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:19,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-01 14:53:19,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:53:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:53:19,827 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-12-01 14:53:19,829 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states. Second operand 5 states. [2020-12-01 14:53:19,984 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states.. Second operand 5 states. Result 45 states and 54 transitions. Complement of second has 13 states. [2020-12-01 14:53:19,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-12-01 14:53:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-12-01 14:53:19,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-12-01 14:53:19,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2020-12-01 14:53:19,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 14:53:19,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2020-12-01 14:53:19,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 14:53:19,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2020-12-01 14:53:19,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 14:53:19,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 54 transitions. [2020-12-01 14:53:19,995 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-12-01 14:53:20,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 37 transitions. [2020-12-01 14:53:20,002 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2020-12-01 14:53:20,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-12-01 14:53:20,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 37 transitions. [2020-12-01 14:53:20,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-12-01 14:53:20,005 INFO L692 BuchiCegarLoop]: Abstraction has 29 states and 37 transitions. [2020-12-01 14:53:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 37 transitions. [2020-12-01 14:53:20,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-12-01 14:53:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-01 14:53:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-12-01 14:53:20,033 INFO L715 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-12-01 14:53:20,033 INFO L595 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-12-01 14:53:20,033 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-12-01 14:53:20,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2020-12-01 14:53:20,035 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-12-01 14:53:20,035 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:53:20,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:53:20,036 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:53:20,036 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 14:53:20,037 INFO L794 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 158#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 159#L574 assume !(main_~n~0 < 1); 141#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 151#new_llENTRY ~n := #in~n; 163#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 140#new_llFINAL assume true; 142#new_llEXIT >#57#return; 153#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 154#L563 assume !(append_~x.base == 0 && append_~x.offset == 0);append_~s~0.base, append_~s~0.offset := append_~x.base, append_~x.offset; 157#L566-3 [2020-12-01 14:53:20,037 INFO L796 eck$LassoCheckResult]: Loop: 157#L566-3 call append_#t~mem6.base, append_#t~mem6.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8); 155#L566-1 assume !!(append_#t~mem6.base != 0 || append_#t~mem6.offset != 0);havoc append_#t~mem6.base, append_#t~mem6.offset;call append_#t~mem7.base, append_#t~mem7.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8);append_~x.base, append_~x.offset := append_#t~mem7.base, append_#t~mem7.offset;havoc append_#t~mem7.base, append_#t~mem7.offset; 157#L566-3 [2020-12-01 14:53:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:20,038 INFO L82 PathProgramCache]: Analyzing trace with hash 772923198, now seen corresponding path program 1 times [2020-12-01 14:53:20,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:20,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228073927] [2020-12-01 14:53:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-01 14:53:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:53:20,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228073927] [2020-12-01 14:53:20,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:53:20,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 14:53:20,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632305164] [2020-12-01 14:53:20,145 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-12-01 14:53:20,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:20,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2086, now seen corresponding path program 1 times [2020-12-01 14:53:20,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:20,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819153882] [2020-12-01 14:53:20,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:20,157 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:20,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:20,168 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:53:20,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:53:20,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 14:53:20,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 14:53:20,213 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. cyclomatic complexity: 9 Second operand 6 states. [2020-12-01 14:53:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:53:20,375 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-12-01 14:53:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 14:53:20,376 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 31 transitions. [2020-12-01 14:53:20,389 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-12-01 14:53:20,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 28 transitions. [2020-12-01 14:53:20,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-12-01 14:53:20,391 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-12-01 14:53:20,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2020-12-01 14:53:20,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-12-01 14:53:20,391 INFO L692 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-12-01 14:53:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2020-12-01 14:53:20,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-01 14:53:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-01 14:53:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-12-01 14:53:20,394 INFO L715 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-12-01 14:53:20,394 INFO L595 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-12-01 14:53:20,394 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-12-01 14:53:20,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2020-12-01 14:53:20,395 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-12-01 14:53:20,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:53:20,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:53:20,396 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:53:20,396 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 14:53:20,397 INFO L794 eck$LassoCheckResult]: Stem: 231#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 229#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 230#L574 assume !(main_~n~0 < 1); 220#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 222#new_llENTRY ~n := #in~n; 232#L548 assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 212#L552 call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 223#new_llENTRY ~n := #in~n; 233#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 211#new_llFINAL assume true; 213#new_llEXIT >#53#return; 219#L552-1 call write~$Pointer$(#t~ret3.base, #t~ret3.offset, ~head~0.base, 4 + ~head~0.offset, 8);havoc #t~ret3.base, #t~ret3.offset;#res.base, #res.offset := ~head~0.base, ~head~0.offset; 221#new_llFINAL assume true; 234#new_llEXIT >#57#return; 224#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 225#L563 assume !(append_~x.base == 0 && append_~x.offset == 0);append_~s~0.base, append_~s~0.offset := append_~x.base, append_~x.offset; 228#L566-3 [2020-12-01 14:53:20,397 INFO L796 eck$LassoCheckResult]: Loop: 228#L566-3 call append_#t~mem6.base, append_#t~mem6.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8); 226#L566-1 assume !!(append_#t~mem6.base != 0 || append_#t~mem6.offset != 0);havoc append_#t~mem6.base, append_#t~mem6.offset;call append_#t~mem7.base, append_#t~mem7.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8);append_~x.base, append_~x.offset := append_#t~mem7.base, append_#t~mem7.offset;havoc append_#t~mem7.base, append_#t~mem7.offset; 228#L566-3 [2020-12-01 14:53:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:20,397 INFO L82 PathProgramCache]: Analyzing trace with hash 704779872, now seen corresponding path program 1 times [2020-12-01 14:53:20,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:20,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123774667] [2020-12-01 14:53:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:20,446 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:20,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:20,497 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:53:20,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:20,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2086, now seen corresponding path program 2 times [2020-12-01 14:53:20,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:20,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608694571] [2020-12-01 14:53:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:20,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:20,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:20,530 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:53:20,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:20,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1311374651, now seen corresponding path program 1 times [2020-12-01 14:53:20,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:20,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546401294] [2020-12-01 14:53:20,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:20,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-01 14:53:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 14:53:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 14:53:20,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546401294] [2020-12-01 14:53:20,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75347447] [2020-12-01 14:53:20,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:53:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:20,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-01 14:53:20,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:53:20,992 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-01 14:53:20,993 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 14:53:21,004 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:53:21,006 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 14:53:21,007 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-01 14:53:21,117 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 14:53:21,117 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 14:53:21,126 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:53:21,130 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 14:53:21,133 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 14:53:21,141 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:53:21,143 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 14:53:21,144 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2020-12-01 14:53:21,298 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-12-01 14:53:21,300 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 14:53:21,308 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:53:21,313 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-01 14:53:21,314 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 14:53:21,320 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:53:21,323 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-01 14:53:21,325 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-01 14:53:21,329 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:53:21,329 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 14:53:21,330 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:34, output treesize:7 [2020-12-01 14:53:21,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:53:21,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:53:21,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-12-01 14:53:21,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126455756] [2020-12-01 14:53:21,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:53:21,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-01 14:53:21,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-12-01 14:53:21,402 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. cyclomatic complexity: 7 Second operand 18 states. [2020-12-01 14:53:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:53:21,657 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-12-01 14:53:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 14:53:21,658 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 40 transitions. [2020-12-01 14:53:21,662 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-12-01 14:53:21,667 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 40 transitions. [2020-12-01 14:53:21,667 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-12-01 14:53:21,667 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-12-01 14:53:21,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 40 transitions. [2020-12-01 14:53:21,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-12-01 14:53:21,668 INFO L692 BuchiCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-12-01 14:53:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 40 transitions. [2020-12-01 14:53:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-12-01 14:53:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 14:53:21,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-12-01 14:53:21,677 INFO L715 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-12-01 14:53:21,677 INFO L595 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-12-01 14:53:21,678 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-12-01 14:53:21,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 37 transitions. [2020-12-01 14:53:21,680 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-12-01 14:53:21,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:53:21,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:53:21,681 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:53:21,681 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 14:53:21,681 INFO L794 eck$LassoCheckResult]: Stem: 381#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 379#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 380#L574 assume !(main_~n~0 < 1); 365#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 373#new_llENTRY ~n := #in~n; 385#L548 assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 364#L552 call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 374#new_llENTRY ~n := #in~n; 386#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 387#new_llFINAL assume true; 384#new_llEXIT >#53#return; 372#L552-1 call write~$Pointer$(#t~ret3.base, #t~ret3.offset, ~head~0.base, 4 + ~head~0.offset, 8);havoc #t~ret3.base, #t~ret3.offset;#res.base, #res.offset := ~head~0.base, ~head~0.offset; 363#new_llFINAL assume true; 366#new_llEXIT >#57#return; 390#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 389#L563 assume append_~x.base == 0 && append_~x.offset == 0;append_#res.base, append_#res.offset := append_~y.base, append_~y.offset; 371#L569 main_#t~ret10.base, main_#t~ret10.offset := append_#res.base, append_#res.offset;main_~y~0.base, main_~y~0.offset := main_#t~ret10.base, main_#t~ret10.offset;havoc main_#t~ret10.base, main_#t~ret10.offset; 369#L579 call main_#t~ret11 := length(main_~y~0.base, main_~y~0.offset);< 367#lengthENTRY [2020-12-01 14:53:21,681 INFO L796 eck$LassoCheckResult]: Loop: 367#lengthENTRY ~xs.base, ~xs.offset := #in~xs.base, #in~xs.offset; 370#L557 assume !(~xs.base == 0 && ~xs.offset == 0);call #t~mem4.base, #t~mem4.offset := read~$Pointer$(~xs.base, 4 + ~xs.offset, 8); 368#L559 call #t~ret5 := length(#t~mem4.base, #t~mem4.offset);< 367#lengthENTRY [2020-12-01 14:53:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:21,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1311376214, now seen corresponding path program 1 times [2020-12-01 14:53:21,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:21,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030547342] [2020-12-01 14:53:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:21,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-01 14:53:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 14:53:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 14:53:21,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030547342] [2020-12-01 14:53:21,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:53:21,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 14:53:21,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644720689] [2020-12-01 14:53:21,798 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-12-01 14:53:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:21,798 INFO L82 PathProgramCache]: Analyzing trace with hash 37905, now seen corresponding path program 1 times [2020-12-01 14:53:21,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:21,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397686752] [2020-12-01 14:53:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:21,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:21,805 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:21,808 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:53:21,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:53:21,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 14:53:21,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:53:21,914 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. cyclomatic complexity: 9 Second operand 7 states. [2020-12-01 14:53:22,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:53:22,000 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-12-01 14:53:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 14:53:22,000 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 41 transitions. [2020-12-01 14:53:22,006 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-12-01 14:53:22,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 41 transitions. [2020-12-01 14:53:22,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2020-12-01 14:53:22,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-12-01 14:53:22,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 41 transitions. [2020-12-01 14:53:22,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-12-01 14:53:22,010 INFO L692 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-12-01 14:53:22,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 41 transitions. [2020-12-01 14:53:22,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-12-01 14:53:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 14:53:22,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-12-01 14:53:22,021 INFO L715 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-12-01 14:53:22,021 INFO L595 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-12-01 14:53:22,021 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-12-01 14:53:22,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 35 transitions. [2020-12-01 14:53:22,024 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-12-01 14:53:22,025 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:53:22,025 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:53:22,026 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:53:22,026 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 14:53:22,027 INFO L794 eck$LassoCheckResult]: Stem: 478#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 473#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 474#L574 assume !(main_~n~0 < 1); 459#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 467#new_llENTRY ~n := #in~n; 481#L548 assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 458#L552 call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 468#new_llENTRY ~n := #in~n; 482#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 483#new_llFINAL assume true; 479#new_llEXIT >#53#return; 480#L552-1 call write~$Pointer$(#t~ret3.base, #t~ret3.offset, ~head~0.base, 4 + ~head~0.offset, 8);havoc #t~ret3.base, #t~ret3.offset;#res.base, #res.offset := ~head~0.base, ~head~0.offset; 487#new_llFINAL assume true; 484#new_llEXIT >#57#return; 469#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 470#L563 assume !(append_~x.base == 0 && append_~x.offset == 0);append_~s~0.base, append_~s~0.offset := append_~x.base, append_~x.offset; 485#L566-3 call append_#t~mem6.base, append_#t~mem6.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8); 471#L566-1 assume !(append_#t~mem6.base != 0 || append_#t~mem6.offset != 0);havoc append_#t~mem6.base, append_#t~mem6.offset; 472#L566-4 call write~$Pointer$(append_~y.base, append_~y.offset, append_~x.base, 4 + append_~x.offset, 8);append_#res.base, append_#res.offset := append_~s~0.base, append_~s~0.offset; 465#L569 main_#t~ret10.base, main_#t~ret10.offset := append_#res.base, append_#res.offset;main_~y~0.base, main_~y~0.offset := main_#t~ret10.base, main_#t~ret10.offset;havoc main_#t~ret10.base, main_#t~ret10.offset; 462#L579 call main_#t~ret11 := length(main_~y~0.base, main_~y~0.offset);< 461#lengthENTRY [2020-12-01 14:53:22,027 INFO L796 eck$LassoCheckResult]: Loop: 461#lengthENTRY ~xs.base, ~xs.offset := #in~xs.base, #in~xs.offset; 464#L557 assume !(~xs.base == 0 && ~xs.offset == 0);call #t~mem4.base, #t~mem4.offset := read~$Pointer$(~xs.base, 4 + ~xs.offset, 8); 463#L559 call #t~ret5 := length(#t~mem4.base, #t~mem4.offset);< 461#lengthENTRY [2020-12-01 14:53:22,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:22,027 INFO L82 PathProgramCache]: Analyzing trace with hash -139719339, now seen corresponding path program 1 times [2020-12-01 14:53:22,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:22,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001628925] [2020-12-01 14:53:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:22,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:22,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:22,073 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:53:22,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:22,073 INFO L82 PathProgramCache]: Analyzing trace with hash 37905, now seen corresponding path program 2 times [2020-12-01 14:53:22,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:22,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533543815] [2020-12-01 14:53:22,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:22,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:22,079 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:22,081 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:53:22,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:22,081 INFO L82 PathProgramCache]: Analyzing trace with hash -555510211, now seen corresponding path program 1 times [2020-12-01 14:53:22,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:22,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776711702] [2020-12-01 14:53:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:22,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:22,124 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:22,142 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:53:22,776 WARN L197 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2020-12-01 14:53:22,801 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 14:53:22,866 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:53:22,873 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 14:53:22,932 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:53:22,934 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-01 14:53:22,934 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:131, output treesize:107 [2020-12-01 14:53:23,865 WARN L197 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 149 [2020-12-01 14:53:23,919 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 14:53:24,091 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-01 14:53:24,091 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:53:24,097 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-01 14:53:24,098 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:220, output treesize:224 [2020-12-01 14:53:24,263 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-01 14:53:24,376 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-01 14:53:24,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 02:53:24 BoogieIcfgContainer [2020-12-01 14:53:24,475 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-12-01 14:53:24,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:53:24,476 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:53:24,476 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:53:24,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:53:16" (3/4) ... [2020-12-01 14:53:24,478 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-12-01 14:53:24,530 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_132bccf1-8ebc-44ec-a8fc-ddc42e394ea8/bin/uautomizer/witness.graphml [2020-12-01 14:53:24,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:53:24,531 INFO L168 Benchmark]: Toolchain (without parser) took 8567.69 ms. Allocated memory was 100.7 MB in the beginning and 180.4 MB in the end (delta: 79.7 MB). Free memory was 71.6 MB in the beginning and 90.3 MB in the end (delta: -18.7 MB). Peak memory consumption was 60.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:24,531 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:53:24,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.45 ms. Allocated memory is still 100.7 MB. Free memory was 71.3 MB in the beginning and 67.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:24,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.58 ms. Allocated memory is still 100.7 MB. Free memory was 67.7 MB in the beginning and 66.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:53:24,532 INFO L168 Benchmark]: Boogie Preprocessor took 31.75 ms. Allocated memory is still 100.7 MB. Free memory was 66.2 MB in the beginning and 64.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:24,533 INFO L168 Benchmark]: RCFGBuilder took 335.96 ms. Allocated memory is still 100.7 MB. Free memory was 64.4 MB in the beginning and 47.3 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:24,533 INFO L168 Benchmark]: BuchiAutomizer took 7581.49 ms. Allocated memory was 100.7 MB in the beginning and 180.4 MB in the end (delta: 79.7 MB). Free memory was 47.3 MB in the beginning and 91.4 MB in the end (delta: -44.1 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:24,534 INFO L168 Benchmark]: Witness Printer took 54.51 ms. Allocated memory is still 180.4 MB. Free memory was 91.4 MB in the beginning and 90.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:24,536 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 77.6 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 514.45 ms. Allocated memory is still 100.7 MB. Free memory was 71.3 MB in the beginning and 67.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.58 ms. Allocated memory is still 100.7 MB. Free memory was 67.7 MB in the beginning and 66.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.75 ms. Allocated memory is still 100.7 MB. Free memory was 66.2 MB in the beginning and 64.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 335.96 ms. Allocated memory is still 100.7 MB. Free memory was 64.4 MB in the beginning and 47.3 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7581.49 ms. Allocated memory was 100.7 MB in the beginning and 180.4 MB in the end (delta: 79.7 MB). Free memory was 47.3 MB in the beginning and 91.4 MB in the end (delta: -44.1 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.1 GB. * Witness Printer took 54.51 ms. Allocated memory is still 180.4 MB. Free memory was 91.4 MB in the beginning and 90.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (3 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(n) and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 18 locations. The remainder module has 31 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 6.3s. Construction of modules took 0.2s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 31 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 61 SDtfs, 58 SDslu, 214 SDs, 0 SdLazy, 258 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU2 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital136 mio100 ax100 hnf100 lsp95 ukn27 mio100 lsp38 div100 bol100 ite100 ukn100 eq214 hnf86 smp100 dnf130 smp100 tf100 neg94 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 161ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 555]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {x=0, x=0, y_length=0, NULL=0, y=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6da1e116=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7d45adb9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@76907d=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@76907d=0, s=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77e8fc7d=0, xs=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67d26fd6=0, NULL=0, y=0, y=0, \result=0, x=0, y=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@52974ebc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@694bc6cf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@694bc6cf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7d45adb9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@103fcdc6=0, x=0, y=0, n=0, NULL=0, y=0, xs=-1, \result=0, \result=0, NULL=0, xs=0, xs=0, x=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77e8fc7d=0, s=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6da1e116=0, x=0, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 555]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L573] int n = __VERIFIER_nondet_int(); [L574] COND FALSE !(n < 1) [L577] CALL, EXPR new_ll(n) [L548] COND FALSE !(n == 0) [L550] node_t* head = malloc(sizeof(node_t)); [L551] head->val = n [L552] CALL, EXPR new_ll(n-1) [L548] COND TRUE n == 0 [L549] return ((void *)0); [L552] RET, EXPR new_ll(n-1) [L552] head->next = new_ll(n-1) [L553] return head; [L577] RET, EXPR new_ll(n) [L577] node_t* x = new_ll(n); [L563] COND FALSE !(x == ((void *)0)) [L565] node_t* s = x; [L566] EXPR x->next [L566] COND FALSE !(x->next != ((void *)0)) [L568] x->next = y [L569] return s; [L578] node_t* y = append(x, x); [L579] CALL length(y) Loop: [L557] COND FALSE !(xs == ((void *)0)) [L559] EXPR xs->next [L559] CALL length(xs->next) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...