./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/memsafety/test-0218.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/memsafety/test-0218.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 6f18184220956fe7b92d880dad06de43e18c04f3 ............................................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-11-28 21:26:21,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 21:26:21,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 21:26:21,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 21:26:21,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 21:26:21,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 21:26:21,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 21:26:21,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 21:26:21,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 21:26:21,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 21:26:21,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 21:26:21,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 21:26:21,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 21:26:21,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 21:26:21,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 21:26:21,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 21:26:21,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 21:26:21,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 21:26:21,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 21:26:21,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 21:26:21,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 21:26:21,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 21:26:21,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 21:26:21,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 21:26:21,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 21:26:21,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 21:26:21,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 21:26:21,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 21:26:21,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 21:26:21,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 21:26:21,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 21:26:21,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 21:26:21,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 21:26:21,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 21:26:21,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 21:26:21,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 21:26:21,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 21:26:21,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 21:26:21,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 21:26:21,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 21:26:21,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 21:26:21,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 21:26:21,754 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 21:26:21,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 21:26:21,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 21:26:21,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 21:26:21,756 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 21:26:21,757 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 21:26:21,758 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 21:26:21,758 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 21:26:21,758 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 21:26:21,759 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 21:26:21,760 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 21:26:21,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 21:26:21,760 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 21:26:21,761 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 21:26:21,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 21:26:21,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 21:26:21,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 21:26:21,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 21:26:21,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 21:26:21,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 21:26:21,764 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 21:26:21,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 21:26:21,766 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 21:26:21,768 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 21:26:21,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 21:26:21,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 21:26:21,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 21:26:21,769 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 21:26:21,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 21:26:21,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 21:26:21,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 21:26:21,771 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 21:26:21,772 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 21:26:21,773 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 6f18184220956fe7b92d880dad06de43e18c04f3 [2019-11-28 21:26:22,055 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 21:26:22,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 21:26:22,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 21:26:22,075 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 21:26:22,076 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 21:26:22,076 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0218.i [2019-11-28 21:26:22,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce007c9c/5c3a924d48ab4be09ba8da6a335f8994/FLAG5bc507497 [2019-11-28 21:26:22,655 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 21:26:22,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0218.i [2019-11-28 21:26:22,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce007c9c/5c3a924d48ab4be09ba8da6a335f8994/FLAG5bc507497 [2019-11-28 21:26:22,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce007c9c/5c3a924d48ab4be09ba8da6a335f8994 [2019-11-28 21:26:22,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 21:26:22,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 21:26:22,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 21:26:22,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 21:26:22,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 21:26:22,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:26:22" (1/1) ... [2019-11-28 21:26:22,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf693b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:22, skipping insertion in model container [2019-11-28 21:26:22,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:26:22" (1/1) ... [2019-11-28 21:26:22,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 21:26:23,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 21:26:23,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:26:23,463 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 21:26:23,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:26:23,612 INFO L208 MainTranslator]: Completed translation [2019-11-28 21:26:23,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23 WrapperNode [2019-11-28 21:26:23,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 21:26:23,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 21:26:23,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 21:26:23,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 21:26:23,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23" (1/1) ... [2019-11-28 21:26:23,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23" (1/1) ... [2019-11-28 21:26:23,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 21:26:23,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 21:26:23,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 21:26:23,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 21:26:23,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23" (1/1) ... [2019-11-28 21:26:23,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23" (1/1) ... [2019-11-28 21:26:23,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23" (1/1) ... [2019-11-28 21:26:23,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23" (1/1) ... [2019-11-28 21:26:23,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23" (1/1) ... [2019-11-28 21:26:23,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23" (1/1) ... [2019-11-28 21:26:23,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23" (1/1) ... [2019-11-28 21:26:23,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 21:26:23,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 21:26:23,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 21:26:23,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 21:26:23,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 21:26:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-28 21:26:23,796 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-28 21:26:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 21:26:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 21:26:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 21:26:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 21:26:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 21:26:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-28 21:26:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 21:26:23,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 21:26:24,014 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-28 21:26:24,349 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 21:26:24,349 INFO L287 CfgBuilder]: Removed 21 assume(true) statements. [2019-11-28 21:26:24,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:26:24 BoogieIcfgContainer [2019-11-28 21:26:24,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 21:26:24,352 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 21:26:24,352 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 21:26:24,359 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 21:26:24,360 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:26:24,361 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 09:26:22" (1/3) ... [2019-11-28 21:26:24,362 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69fa0810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:26:24, skipping insertion in model container [2019-11-28 21:26:24,363 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:26:24,363 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:23" (2/3) ... [2019-11-28 21:26:24,363 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69fa0810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:26:24, skipping insertion in model container [2019-11-28 21:26:24,364 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:26:24,364 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:26:24" (3/3) ... [2019-11-28 21:26:24,366 INFO L371 chiAutomizerObserver]: Analyzing ICFG test-0218.i [2019-11-28 21:26:24,427 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 21:26:24,427 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 21:26:24,427 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 21:26:24,428 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 21:26:24,428 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 21:26:24,428 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 21:26:24,429 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 21:26:24,429 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 21:26:24,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states. [2019-11-28 21:26:24,479 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2019-11-28 21:26:24,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:26:24,479 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:26:24,485 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 21:26:24,485 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:26:24,485 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 21:26:24,485 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states. [2019-11-28 21:26:24,489 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2019-11-28 21:26:24,490 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:26:24,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:26:24,490 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 21:26:24,490 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:26:24,498 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#list~0.base, ~#list~0.offset := #Ultimate.allocOnStack(8);call write~init~$Pointer$(0, 0, ~#list~0.base, ~#list~0.offset, 4);call write~init~$Pointer$(0, 0, ~#list~0.base, 4 + ~#list~0.offset, 4); 7#L-1true havoc main_#res;havoc main_#t~ret30, main_#t~nondet29, main_#t~ret32, main_#t~nondet31, main_#t~nondet28, main_#t~nondet33, main_#t~mem34.base, main_#t~mem34.offset, main_#t~mem35.base, main_#t~mem35.offset, main_~next~1.base, main_~next~1.offset, main_~end_point~0, main_~direction~0, main_~cursor~1.base, main_~cursor~1.offset; 36#L715-2true [2019-11-28 21:26:24,498 INFO L796 eck$LassoCheckResult]: Loop: 36#L715-2true assume !!(0 != main_#t~nondet28);havoc main_#t~nondet28; 13#L713-2true assume !true; 44#L715-1true assume !true; 36#L715-2true [2019-11-28 21:26:24,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:26:24,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1251, now seen corresponding path program 1 times [2019-11-28 21:26:24,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:26:24,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979559253] [2019-11-28 21:26:24,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:26:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:24,630 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:26:24,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:26:24,631 INFO L82 PathProgramCache]: Analyzing trace with hash 52490, now seen corresponding path program 1 times [2019-11-28 21:26:24,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:26:24,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457127161] [2019-11-28 21:26:24,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:26:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:26:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:26:24,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457127161] [2019-11-28 21:26:24,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:26:24,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 21:26:24,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017609272] [2019-11-28 21:26:24,670 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 21:26:24,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:26:24,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 21:26:24,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 21:26:24,689 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2019-11-28 21:26:24,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:26:24,706 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2019-11-28 21:26:24,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 21:26:24,708 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 72 transitions. [2019-11-28 21:26:24,711 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2019-11-28 21:26:24,723 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 48 states and 68 transitions. [2019-11-28 21:26:24,727 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2019-11-28 21:26:24,727 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2019-11-28 21:26:24,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 68 transitions. [2019-11-28 21:26:24,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:26:24,730 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 68 transitions. [2019-11-28 21:26:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 68 transitions. [2019-11-28 21:26:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-11-28 21:26:24,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-28 21:26:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2019-11-28 21:26:24,768 INFO L711 BuchiCegarLoop]: Abstraction has 48 states and 68 transitions. [2019-11-28 21:26:24,768 INFO L591 BuchiCegarLoop]: Abstraction has 48 states and 68 transitions. [2019-11-28 21:26:24,769 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 21:26:24,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 68 transitions. [2019-11-28 21:26:24,773 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2019-11-28 21:26:24,773 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:26:24,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:26:24,774 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 21:26:24,774 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:26:24,774 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#list~0.base, ~#list~0.offset := #Ultimate.allocOnStack(8);call write~init~$Pointer$(0, 0, ~#list~0.base, ~#list~0.offset, 4);call write~init~$Pointer$(0, 0, ~#list~0.base, 4 + ~#list~0.offset, 4); 135#L-1 havoc main_#res;havoc main_#t~ret30, main_#t~nondet29, main_#t~ret32, main_#t~nondet31, main_#t~nondet28, main_#t~nondet33, main_#t~mem34.base, main_#t~mem34.offset, main_#t~mem35.base, main_#t~mem35.offset, main_~next~1.base, main_~next~1.offset, main_~end_point~0, main_~direction~0, main_~cursor~1.base, main_~cursor~1.offset; 136#L715-2 [2019-11-28 21:26:24,775 INFO L796 eck$LassoCheckResult]: Loop: 136#L715-2 assume !!(0 != main_#t~nondet28);havoc main_#t~nondet28; 113#L713-2 assume !(0 != main_#t~nondet29);havoc main_#t~nondet29; 119#L715-1 assume !(0 != main_#t~nondet31);havoc main_#t~nondet31; 136#L715-2 [2019-11-28 21:26:24,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:26:24,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1251, now seen corresponding path program 2 times [2019-11-28 21:26:24,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:26:24,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356538183] [2019-11-28 21:26:24,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:26:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:24,810 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:26:24,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:26:24,811 INFO L82 PathProgramCache]: Analyzing trace with hash 49962, now seen corresponding path program 1 times [2019-11-28 21:26:24,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:26:24,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686348172] [2019-11-28 21:26:24,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:26:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:24,821 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:26:24,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:26:24,822 INFO L82 PathProgramCache]: Analyzing trace with hash 37288712, now seen corresponding path program 1 times [2019-11-28 21:26:24,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:26:24,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947852985] [2019-11-28 21:26:24,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:26:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:24,844 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:26:25,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 09:26:25 BoogieIcfgContainer [2019-11-28 21:26:25,056 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 21:26:25,058 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 21:26:25,059 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 21:26:25,059 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 21:26:25,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:26:24" (3/4) ... [2019-11-28 21:26:25,064 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 21:26:25,120 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 21:26:25,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 21:26:25,133 INFO L168 Benchmark]: Toolchain (without parser) took 2170.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 948.3 MB in the beginning and 1.0 GB in the end (delta: -70.8 MB). Peak memory consumption was 70.8 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:25,134 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 21:26:25,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -161.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:25,136 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 21:26:25,138 INFO L168 Benchmark]: Boogie Preprocessor took 45.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:25,139 INFO L168 Benchmark]: RCFGBuilder took 628.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:25,141 INFO L168 Benchmark]: BuchiAutomizer took 704.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:25,142 INFO L168 Benchmark]: Witness Printer took 69.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:25,150 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 651.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -161.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 628.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 704.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * Witness Printer took 69.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 2 locations. The remainder module has 48 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 48 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 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: 712]: 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 {cursor=0, NULL=0, \result=0, end_point=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1cf45790=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b5a2dee=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@302fefef=0, NULL=0, list=2, list=0, next=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@262e9caa=12, next=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@152fb5eb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@183cc7b1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@183cc7b1=0, cursor=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54bad1de=0, direction=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@302fefef=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76df2810=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 712]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L711] static list_t list; Loop: [L712] COND TRUE __VERIFIER_nondet_int() [L713] COND FALSE !(__VERIFIER_nondet_int()) [L715] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...