./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0b85db7f19d029ed27be7f6b92a191abc3110f8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-28 03:02:34,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:02:34,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:02:34,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:02:34,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:02:34,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:02:34,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:02:34,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:02:34,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:02:34,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:02:34,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:02:34,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:02:34,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:02:34,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:02:34,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:02:34,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:02:34,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:02:34,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:02:34,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:02:34,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:02:34,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:02:34,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:02:34,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:02:34,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:02:34,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:02:34,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:02:34,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:02:34,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:02:34,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:02:34,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:02:34,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:02:34,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:02:34,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:02:34,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:02:34,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:02:34,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:02:34,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:02:34,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:02:34,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:02:34,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:02:34,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:02:34,987 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 03:02:35,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:02:35,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:02:35,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:02:35,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:02:35,030 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:02:35,030 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:02:35,030 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:02:35,031 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:02:35,031 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:02:35,031 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:02:35,032 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:02:35,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:02:35,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:02:35,033 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:02:35,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:02:35,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:02:35,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:02:35,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:02:35,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:02:35,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:02:35,034 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:02:35,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:02:35,034 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:02:35,035 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:02:35,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:02:35,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:02:35,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:02:35,035 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:02:35,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:02:35,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:02:35,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:02:35,038 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:02:35,039 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:02:35,039 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_2ed5f35a-6f78-4c85-918c-5ef5aae83746/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b85db7f19d029ed27be7f6b92a191abc3110f8 [2020-11-28 03:02:35,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:02:35,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:02:35,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:02:35,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:02:35,329 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:02:35,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-1.i [2020-11-28 03:02:35,436 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/data/3abffa0dd/dcb28022ca7c4d55a3ab87040b535c10/FLAG5caf5010c [2020-11-28 03:02:36,111 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:02:36,112 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-1.i [2020-11-28 03:02:36,132 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/data/3abffa0dd/dcb28022ca7c4d55a3ab87040b535c10/FLAG5caf5010c [2020-11-28 03:02:36,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/data/3abffa0dd/dcb28022ca7c4d55a3ab87040b535c10 [2020-11-28 03:02:36,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:02:36,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:02:36,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:36,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:02:36,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:02:36,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:36" (1/1) ... [2020-11-28 03:02:36,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2001597b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36, skipping insertion in model container [2020-11-28 03:02:36,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:36" (1/1) ... [2020-11-28 03:02:36,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:02:36,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:02:36,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:36,808 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:02:36,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:36,934 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:02:36,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36 WrapperNode [2020-11-28 03:02:36,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:36,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:36,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:02:36,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:02:36,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36" (1/1) ... [2020-11-28 03:02:36,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36" (1/1) ... [2020-11-28 03:02:37,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:37,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:02:37,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:02:37,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:02:37,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36" (1/1) ... [2020-11-28 03:02:37,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36" (1/1) ... [2020-11-28 03:02:37,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36" (1/1) ... [2020-11-28 03:02:37,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36" (1/1) ... [2020-11-28 03:02:37,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36" (1/1) ... [2020-11-28 03:02:37,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36" (1/1) ... [2020-11-28 03:02:37,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36" (1/1) ... [2020-11-28 03:02:37,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:02:37,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:02:37,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:02:37,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:02:37,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:02:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:02:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:02:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:02:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:02:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:02:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:02:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:02:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:02:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:02:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:02:37,829 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:02:37,829 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 03:02:37,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:37 BoogieIcfgContainer [2020-11-28 03:02:37,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:02:37,832 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:02:37,832 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:02:37,836 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:02:37,837 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:02:37,837 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:02:36" (1/3) ... [2020-11-28 03:02:37,838 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1fcb3972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:02:37, skipping insertion in model container [2020-11-28 03:02:37,839 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:02:37,839 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:36" (2/3) ... [2020-11-28 03:02:37,839 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1fcb3972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:02:37, skipping insertion in model container [2020-11-28 03:02:37,839 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:02:37,839 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:37" (3/3) ... [2020-11-28 03:02:37,841 INFO L373 chiAutomizerObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-11-28 03:02:37,887 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:02:37,888 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:02:37,888 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:02:37,888 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:02:37,888 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:02:37,888 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:02:37,888 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:02:37,889 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:02:37,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states. [2020-11-28 03:02:37,924 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2020-11-28 03:02:37,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:02:37,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:02:37,931 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:02:37,931 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:02:37,931 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:02:37,931 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states. [2020-11-28 03:02:37,935 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2020-11-28 03:02:37,935 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:02:37,935 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:02:37,936 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:02:37,936 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:02:37,943 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(24); 14#L-1true havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet10, main_#t~mem11.base, main_#t~mem11.offset, main_#t~mem12.base, main_#t~mem12.offset, main_#t~mem7.base, main_#t~mem7.offset, main_#t~mem8.base, main_#t~mem8.offset, main_#t~short9, main_#t~mem13.base, main_#t~mem13.offset, main_#t~nondet14, main_#t~malloc15.base, main_#t~malloc15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17.base, main_#t~mem17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~nondet19, main_#t~malloc20.base, main_#t~malloc20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~mem22.base, main_#t~mem22.offset, main_#t~nondet6, main_#t~mem26.base, main_#t~mem26.offset, main_#t~mem27.base, main_#t~mem27.offset, main_#t~mem28.base, main_#t~mem28.offset, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~short25, main_#t~mem29.base, main_#t~mem29.offset, main_#t~malloc30.base, main_#t~malloc30.offset, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~malloc35.base, main_#t~malloc35.offset, main_#t~mem36.base, main_#t~mem36.offset, main_#t~nondet34, main_#t~mem38.base, main_#t~mem38.offset, main_#t~mem37, main_#t~mem40.base, main_#t~mem40.offset, main_#t~mem39, main_#t~mem41, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 8#L568-2true [2020-11-28 03:02:37,943 INFO L796 eck$LassoCheckResult]: Loop: 8#L568-2true assume !!(0 != main_#t~nondet6);havoc main_#t~nondet6;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 32#L558-2true assume !true; 42#L557-5true call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 18#L563true assume (main_#t~mem13.base == 0 && main_#t~mem13.offset == 0) && 0 != main_#t~nondet14;havoc main_#t~mem13.base, main_#t~mem13.offset;havoc main_#t~nondet14;call main_#t~malloc15.base, main_#t~malloc15.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$(main_#t~malloc15.base, main_#t~malloc15.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem16.base, main_#t~mem16.offset, 4);havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17.base, main_#t~mem17.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem17.base, 4 + main_#t~mem17.offset, 4);havoc main_#t~mem17.base, main_#t~mem17.offset; 25#L563-2true call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 4#L568true assume !((main_#t~mem18.base == 0 && main_#t~mem18.offset == 0) && 0 != main_#t~nondet19);havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~nondet19; 8#L568-2true [2020-11-28 03:02:37,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:37,950 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-11-28 03:02:37,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:37,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983911293] [2020-11-28 03:02:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:38,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:38,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:38,110 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:38,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:38,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1235889697, now seen corresponding path program 1 times [2020-11-28 03:02:38,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:38,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106061329] [2020-11-28 03:02:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:38,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106061329] [2020-11-28 03:02:38,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:38,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:02:38,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271138127] [2020-11-28 03:02:38,159 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-28 03:02:38,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:38,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:02:38,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:02:38,180 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2020-11-28 03:02:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:38,192 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2020-11-28 03:02:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:02:38,194 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 63 transitions. [2020-11-28 03:02:38,206 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2020-11-28 03:02:38,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 37 states and 55 transitions. [2020-11-28 03:02:38,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2020-11-28 03:02:38,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2020-11-28 03:02:38,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 55 transitions. [2020-11-28 03:02:38,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:02:38,214 INFO L691 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2020-11-28 03:02:38,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 55 transitions. [2020-11-28 03:02:38,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 03:02:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 03:02:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 55 transitions. [2020-11-28 03:02:38,264 INFO L714 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2020-11-28 03:02:38,264 INFO L594 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2020-11-28 03:02:38,265 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:02:38,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 55 transitions. [2020-11-28 03:02:38,267 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2020-11-28 03:02:38,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:02:38,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:02:38,268 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:02:38,269 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:38,269 INFO L794 eck$LassoCheckResult]: Stem: 134#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(24); 120#L-1 havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet10, main_#t~mem11.base, main_#t~mem11.offset, main_#t~mem12.base, main_#t~mem12.offset, main_#t~mem7.base, main_#t~mem7.offset, main_#t~mem8.base, main_#t~mem8.offset, main_#t~short9, main_#t~mem13.base, main_#t~mem13.offset, main_#t~nondet14, main_#t~malloc15.base, main_#t~malloc15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17.base, main_#t~mem17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~nondet19, main_#t~malloc20.base, main_#t~malloc20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~mem22.base, main_#t~mem22.offset, main_#t~nondet6, main_#t~mem26.base, main_#t~mem26.offset, main_#t~mem27.base, main_#t~mem27.offset, main_#t~mem28.base, main_#t~mem28.offset, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~short25, main_#t~mem29.base, main_#t~mem29.offset, main_#t~malloc30.base, main_#t~malloc30.offset, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~malloc35.base, main_#t~malloc35.offset, main_#t~mem36.base, main_#t~mem36.offset, main_#t~nondet34, main_#t~mem38.base, main_#t~mem38.offset, main_#t~mem37, main_#t~mem40.base, main_#t~mem40.offset, main_#t~mem39, main_#t~mem41, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 102#L568-2 [2020-11-28 03:02:38,269 INFO L796 eck$LassoCheckResult]: Loop: 102#L568-2 assume !!(0 != main_#t~nondet6);havoc main_#t~nondet6;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 107#L558-2 call main_#t~mem7.base, main_#t~mem7.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short9 := main_#t~mem7.base != 0 || main_#t~mem7.offset != 0; 104#L557-1 assume main_#t~short9;call main_#t~mem8.base, main_#t~mem8.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short9 := main_#t~mem8.base != 0 || main_#t~mem8.offset != 0; 105#L557-3 assume !main_#t~short9;havoc main_#t~mem8.base, main_#t~mem8.offset;havoc main_#t~short9;havoc main_#t~mem7.base, main_#t~mem7.offset; 115#L557-5 call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 122#L563 assume (main_#t~mem13.base == 0 && main_#t~mem13.offset == 0) && 0 != main_#t~nondet14;havoc main_#t~mem13.base, main_#t~mem13.offset;havoc main_#t~nondet14;call main_#t~malloc15.base, main_#t~malloc15.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$(main_#t~malloc15.base, main_#t~malloc15.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem16.base, main_#t~mem16.offset, 4);havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17.base, main_#t~mem17.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem17.base, 4 + main_#t~mem17.offset, 4);havoc main_#t~mem17.base, main_#t~mem17.offset; 123#L563-2 call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 101#L568 assume !((main_#t~mem18.base == 0 && main_#t~mem18.offset == 0) && 0 != main_#t~nondet19);havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~nondet19; 102#L568-2 [2020-11-28 03:02:38,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:38,272 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2020-11-28 03:02:38,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:38,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531641624] [2020-11-28 03:02:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:38,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:38,352 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:38,363 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:38,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:38,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2066931060, now seen corresponding path program 1 times [2020-11-28 03:02:38,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:38,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51575525] [2020-11-28 03:02:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:38,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51575525] [2020-11-28 03:02:38,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:38,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:02:38,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886262002] [2020-11-28 03:02:38,584 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-28 03:02:38,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:38,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:02:38,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:02:38,585 INFO L87 Difference]: Start difference. First operand 37 states and 55 transitions. cyclomatic complexity: 27 Second operand 5 states. [2020-11-28 03:02:38,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:38,787 INFO L93 Difference]: Finished difference Result 44 states and 65 transitions. [2020-11-28 03:02:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:02:38,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 65 transitions. [2020-11-28 03:02:38,790 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 36 [2020-11-28 03:02:38,792 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 65 transitions. [2020-11-28 03:02:38,792 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2020-11-28 03:02:38,792 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-11-28 03:02:38,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 65 transitions. [2020-11-28 03:02:38,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:02:38,793 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 65 transitions. [2020-11-28 03:02:38,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 65 transitions. [2020-11-28 03:02:38,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-11-28 03:02:38,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 03:02:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2020-11-28 03:02:38,802 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2020-11-28 03:02:38,802 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2020-11-28 03:02:38,802 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:02:38,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2020-11-28 03:02:38,805 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 33 [2020-11-28 03:02:38,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:02:38,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:02:38,806 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:02:38,806 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:38,807 INFO L794 eck$LassoCheckResult]: Stem: 226#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(24); 209#L-1 havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet10, main_#t~mem11.base, main_#t~mem11.offset, main_#t~mem12.base, main_#t~mem12.offset, main_#t~mem7.base, main_#t~mem7.offset, main_#t~mem8.base, main_#t~mem8.offset, main_#t~short9, main_#t~mem13.base, main_#t~mem13.offset, main_#t~nondet14, main_#t~malloc15.base, main_#t~malloc15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17.base, main_#t~mem17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~nondet19, main_#t~malloc20.base, main_#t~malloc20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~mem22.base, main_#t~mem22.offset, main_#t~nondet6, main_#t~mem26.base, main_#t~mem26.offset, main_#t~mem27.base, main_#t~mem27.offset, main_#t~mem28.base, main_#t~mem28.offset, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~short25, main_#t~mem29.base, main_#t~mem29.offset, main_#t~malloc30.base, main_#t~malloc30.offset, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~malloc35.base, main_#t~malloc35.offset, main_#t~mem36.base, main_#t~mem36.offset, main_#t~nondet34, main_#t~mem38.base, main_#t~mem38.offset, main_#t~mem37, main_#t~mem40.base, main_#t~mem40.offset, main_#t~mem39, main_#t~mem41, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 193#L568-2 [2020-11-28 03:02:38,807 INFO L796 eck$LassoCheckResult]: Loop: 193#L568-2 assume !!(0 != main_#t~nondet6);havoc main_#t~nondet6;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 199#L558-2 call main_#t~mem7.base, main_#t~mem7.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short9 := main_#t~mem7.base != 0 || main_#t~mem7.offset != 0; 195#L557-1 assume main_#t~short9;call main_#t~mem8.base, main_#t~mem8.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short9 := main_#t~mem8.base != 0 || main_#t~mem8.offset != 0; 196#L557-3 assume !main_#t~short9;havoc main_#t~mem8.base, main_#t~mem8.offset;havoc main_#t~short9;havoc main_#t~mem7.base, main_#t~mem7.offset; 229#L557-5 call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 214#L563 assume !((main_#t~mem13.base == 0 && main_#t~mem13.offset == 0) && 0 != main_#t~nondet14);havoc main_#t~mem13.base, main_#t~mem13.offset;havoc main_#t~nondet14; 215#L563-2 call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 192#L568 assume !((main_#t~mem18.base == 0 && main_#t~mem18.offset == 0) && 0 != main_#t~nondet19);havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~nondet19; 193#L568-2 [2020-11-28 03:02:38,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:38,809 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2020-11-28 03:02:38,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:38,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599072411] [2020-11-28 03:02:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:38,845 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:38,863 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:38,870 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:38,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2066932982, now seen corresponding path program 1 times [2020-11-28 03:02:38,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:38,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974333330] [2020-11-28 03:02:38,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:38,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:38,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:38,917 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:38,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1537472840, now seen corresponding path program 1 times [2020-11-28 03:02:38,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:38,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464355187] [2020-11-28 03:02:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:39,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464355187] [2020-11-28 03:02:39,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:39,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:02:39,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126156042] [2020-11-28 03:02:39,287 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-11-28 03:02:39,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:39,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:02:39,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:02:39,383 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. cyclomatic complexity: 28 Second operand 5 states. [2020-11-28 03:02:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:39,860 INFO L93 Difference]: Finished difference Result 92 states and 137 transitions. [2020-11-28 03:02:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:02:39,861 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 137 transitions. [2020-11-28 03:02:39,863 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 60 [2020-11-28 03:02:39,864 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 92 states and 137 transitions. [2020-11-28 03:02:39,864 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2020-11-28 03:02:39,865 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2020-11-28 03:02:39,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 137 transitions. [2020-11-28 03:02:39,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:02:39,869 INFO L691 BuchiCegarLoop]: Abstraction has 92 states and 137 transitions. [2020-11-28 03:02:39,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states and 137 transitions. [2020-11-28 03:02:39,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 48. [2020-11-28 03:02:39,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-28 03:02:39,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 69 transitions. [2020-11-28 03:02:39,882 INFO L714 BuchiCegarLoop]: Abstraction has 48 states and 69 transitions. [2020-11-28 03:02:39,882 INFO L594 BuchiCegarLoop]: Abstraction has 48 states and 69 transitions. [2020-11-28 03:02:39,882 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:02:39,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 69 transitions. [2020-11-28 03:02:39,884 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 41 [2020-11-28 03:02:39,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:02:39,885 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:02:39,886 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:02:39,886 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:39,887 INFO L794 eck$LassoCheckResult]: Stem: 375#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(24); 358#L-1 havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet10, main_#t~mem11.base, main_#t~mem11.offset, main_#t~mem12.base, main_#t~mem12.offset, main_#t~mem7.base, main_#t~mem7.offset, main_#t~mem8.base, main_#t~mem8.offset, main_#t~short9, main_#t~mem13.base, main_#t~mem13.offset, main_#t~nondet14, main_#t~malloc15.base, main_#t~malloc15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17.base, main_#t~mem17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~nondet19, main_#t~malloc20.base, main_#t~malloc20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~mem22.base, main_#t~mem22.offset, main_#t~nondet6, main_#t~mem26.base, main_#t~mem26.offset, main_#t~mem27.base, main_#t~mem27.offset, main_#t~mem28.base, main_#t~mem28.offset, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~short25, main_#t~mem29.base, main_#t~mem29.offset, main_#t~malloc30.base, main_#t~malloc30.offset, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~malloc35.base, main_#t~malloc35.offset, main_#t~mem36.base, main_#t~mem36.offset, main_#t~nondet34, main_#t~mem38.base, main_#t~mem38.offset, main_#t~mem37, main_#t~mem40.base, main_#t~mem40.offset, main_#t~mem39, main_#t~mem41, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 339#L568-2 [2020-11-28 03:02:39,887 INFO L796 eck$LassoCheckResult]: Loop: 339#L568-2 assume !!(0 != main_#t~nondet6);havoc main_#t~nondet6;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 369#L558-2 call main_#t~mem7.base, main_#t~mem7.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short9 := main_#t~mem7.base != 0 || main_#t~mem7.offset != 0; 342#L557-1 assume !main_#t~short9; 343#L557-3 assume !main_#t~short9;havoc main_#t~mem8.base, main_#t~mem8.offset;havoc main_#t~short9;havoc main_#t~mem7.base, main_#t~mem7.offset; 383#L557-5 call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 380#L563 assume !((main_#t~mem13.base == 0 && main_#t~mem13.offset == 0) && 0 != main_#t~nondet14);havoc main_#t~mem13.base, main_#t~mem13.offset;havoc main_#t~nondet14; 381#L563-2 call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 338#L568 assume !((main_#t~mem18.base == 0 && main_#t~mem18.offset == 0) && 0 != main_#t~nondet19);havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~nondet19; 339#L568-2 [2020-11-28 03:02:39,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:39,888 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2020-11-28 03:02:39,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:39,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401780539] [2020-11-28 03:02:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:39,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:39,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:39,935 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:39,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:39,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2124191284, now seen corresponding path program 1 times [2020-11-28 03:02:39,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:39,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636113578] [2020-11-28 03:02:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:39,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:39,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:39,965 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:39,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:39,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1480214538, now seen corresponding path program 1 times [2020-11-28 03:02:39,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:39,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876752870] [2020-11-28 03:02:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:39,981 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:40,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:40,016 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:40,179 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-11-28 03:02:40,619 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-11-28 03:02:40,663 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:02:40,796 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-28 03:02:40,797 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:02:40,799 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:02:40,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:187, output treesize:175 [2020-11-28 03:02:40,944 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-28 03:02:40,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:02:40 BoogieIcfgContainer [2020-11-28 03:02:40,990 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:02:40,991 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:02:40,991 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:02:40,991 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:02:40,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:37" (3/4) ... [2020-11-28 03:02:40,994 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-28 03:02:41,028 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2ed5f35a-6f78-4c85-918c-5ef5aae83746/bin/uautomizer/witness.graphml [2020-11-28 03:02:41,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:02:41,030 INFO L168 Benchmark]: Toolchain (without parser) took 4614.43 ms. Allocated memory was 134.2 MB in the beginning and 167.8 MB in the end (delta: 33.6 MB). Free memory was 101.1 MB in the beginning and 97.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:41,031 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 77.6 MB. Free memory was 34.8 MB in the beginning and 34.7 MB in the end (delta: 38.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:41,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.62 ms. Allocated memory is still 134.2 MB. Free memory was 101.1 MB in the beginning and 97.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:41,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.34 ms. Allocated memory is still 134.2 MB. Free memory was 97.6 MB in the beginning and 95.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:41,033 INFO L168 Benchmark]: Boogie Preprocessor took 41.57 ms. Allocated memory is still 134.2 MB. Free memory was 95.6 MB in the beginning and 93.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:41,033 INFO L168 Benchmark]: RCFGBuilder took 773.22 ms. Allocated memory is still 134.2 MB. Free memory was 92.8 MB in the beginning and 57.8 MB in the end (delta: 35.0 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:41,034 INFO L168 Benchmark]: BuchiAutomizer took 3157.92 ms. Allocated memory was 134.2 MB in the beginning and 167.8 MB in the end (delta: 33.6 MB). Free memory was 57.8 MB in the beginning and 99.0 MB in the end (delta: -41.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:41,035 INFO L168 Benchmark]: Witness Printer took 37.88 ms. Allocated memory is still 167.8 MB. Free memory was 99.0 MB in the beginning and 97.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:41,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 77.6 MB. Free memory was 34.8 MB in the beginning and 34.7 MB in the end (delta: 38.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 513.62 ms. Allocated memory is still 134.2 MB. Free memory was 101.1 MB in the beginning and 97.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.34 ms. Allocated memory is still 134.2 MB. Free memory was 97.6 MB in the beginning and 95.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.57 ms. Allocated memory is still 134.2 MB. Free memory was 95.6 MB in the beginning and 93.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 773.22 ms. Allocated memory is still 134.2 MB. Free memory was 92.8 MB in the beginning and 57.8 MB in the end (delta: 35.0 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3157.92 ms. Allocated memory was 134.2 MB in the beginning and 167.8 MB in the end (delta: 33.6 MB). Free memory was 57.8 MB in the beginning and 99.0 MB in the end (delta: -41.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. * Witness Printer took 37.88 ms. Allocated memory is still 167.8 MB. Free memory was 99.0 MB in the beginning and 97.9 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 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 48 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. Construction of modules took 0.4s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 48 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 48 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 167 SDtfs, 71 SDslu, 179 SDs, 0 SdLazy, 191 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: 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=4380} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1d62b581=0, NULL=0, NULL=4382, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@da7b6c4=0, NULL=4380, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a5c4ff6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6b15bb9b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1e7df1cf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3df4349=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@47ccf6c1=0, root=4379, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7e7dc31e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7b741096=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1d62b581=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6b15bb9b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@789a017d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@da7b6c4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@49902601=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e133562=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@28e2ad43=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34152a87=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39138aaf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7b741096=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5000ff2d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@189ee46b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f855955=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@189ee46b=4379, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3df4349=0, a=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7e7dc31e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a5c4ff6=0, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7030ed11=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@71a13fec=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@40346f0f=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5d52852c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@685f157b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7be78a6b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f855955=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@352caa61=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7652534b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1e7df1cf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@c620844=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@289c46=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@40346f0f=0, n=4379, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@289c46=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1be832e4=0, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e6f5095=0, t=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@754eca8a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e69d2a8=27, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66d0b3f1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@71a13fec=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@49902601=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@47ccf6c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7be78a6b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7652534b=0, t=0, root=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@28e2ad43=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@150c5153=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d3f5a6a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@c620844=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7030ed11=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@2e5d1a32=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5000ff2d=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66d0b3f1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43b31b76=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@352caa61=0, pred=0, NULL=4381, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e133562=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43b31b76=0, n=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5d52852c=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 555]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L552] struct TreeNode* root = malloc(sizeof(*root)), *n; [L553] root->left = ((void *)0) [L554] root->right = ((void *)0) Loop: [L555] COND TRUE __VERIFIER_nondet_int() [L556] n = root [L557] EXPR n->left [L557] n->left && n->right [L557] COND FALSE !(n->left && n->right) [L563] EXPR n->left [L563] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L568] EXPR n->right [L568] COND FALSE !(!n->right && __VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...