./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/simple_built_from_end.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/simple_built_from_end.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41b5142f2d6582efd6d9a128e4dfef83faaab097 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/simple_built_from_end.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41b5142f2d6582efd6d9a128e4dfef83faaab097 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:15:22,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:15:22,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:15:22,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:15:22,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:15:22,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:15:22,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:15:22,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:15:22,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:15:22,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:15:22,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:15:22,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:15:22,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:15:22,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:15:22,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:15:22,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:15:22,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:15:22,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:15:22,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:15:22,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:15:22,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:15:22,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:15:22,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:15:22,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:15:22,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:15:22,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:15:22,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:15:22,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:15:22,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:15:22,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:15:22,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:15:22,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:15:22,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:15:22,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:15:22,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:15:22,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:15:22,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:15:22,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:15:22,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:15:22,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:15:22,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:15:22,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:15:22,902 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:15:22,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:15:22,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:15:22,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:15:22,904 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:15:22,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:15:22,905 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:15:22,905 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:15:22,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:15:22,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:15:22,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:15:22,906 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:15:22,906 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:15:22,907 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:15:22,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:15:22,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:15:22,907 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:15:22,908 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:15:22,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:15:22,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:15:22,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:15:22,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:15:22,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:15:22,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:15:22,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:15:22,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:15:22,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:15:22,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:15:22,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 41b5142f2d6582efd6d9a128e4dfef83faaab097 [2019-11-28 20:15:23,198 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:15:23,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:15:23,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:15:23,218 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:15:23,218 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:15:23,219 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-11-28 20:15:23,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0868df3b9/9b27e8c9a17d4ea7a825ec37c2a1e081/FLAG5f5867926 [2019-11-28 20:15:23,886 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:15:23,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-11-28 20:15:23,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0868df3b9/9b27e8c9a17d4ea7a825ec37c2a1e081/FLAG5f5867926 [2019-11-28 20:15:24,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0868df3b9/9b27e8c9a17d4ea7a825ec37c2a1e081 [2019-11-28 20:15:24,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:15:24,106 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:15:24,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:15:24,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:15:24,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:15:24,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ed52d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24, skipping insertion in model container [2019-11-28 20:15:24,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:15:24,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:15:24,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:15:24,625 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:15:24,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:15:24,745 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:15:24,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24 WrapperNode [2019-11-28 20:15:24,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:15:24,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:15:24,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:15:24,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:15:24,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:15:24,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:15:24,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:15:24,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:15:24,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:15:24,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:15:24,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:15:24,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:15:24,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:15:24,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:15:24,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:15:24,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:15:24,867 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-28 20:15:24,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:15:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 20:15:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:15:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:15:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:15:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:15:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:15:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:15:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:15:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:15:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:15:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:15:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:15:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:15:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:15:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:15:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:15:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:15:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:15:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:15:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:15:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:15:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:15:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:15:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:15:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:15:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:15:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:15:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:15:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:15:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:15:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:15:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:15:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:15:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:15:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:15:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:15:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:15:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:15:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:15:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:15:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:15:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:15:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:15:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:15:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:15:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:15:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:15:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:15:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:15:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:15:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:15:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:15:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:15:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:15:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:15:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:15:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:15:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:15:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:15:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:15:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:15:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:15:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:15:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:15:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:15:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:15:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:15:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:15:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:15:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:15:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:15:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:15:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:15:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:15:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:15:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:15:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:15:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:15:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:15:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:15:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:15:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:15:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:15:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:15:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:15:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:15:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:15:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:15:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:15:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:15:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:15:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:15:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:15:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:15:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:15:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:15:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:15:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:15:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:15:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:15:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:15:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:15:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:15:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:15:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:15:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:15:24,892 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:15:24,892 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:15:24,892 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:15:24,892 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-28 20:15:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:15:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 20:15:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:15:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 20:15:24,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:15:24,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 20:15:24,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:15:24,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:15:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:15:25,267 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-28 20:15:25,425 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:15:25,425 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 20:15:25,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:25 BoogieIcfgContainer [2019-11-28 20:15:25,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:15:25,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:15:25,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:15:25,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:15:25,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:15:24" (1/3) ... [2019-11-28 20:15:25,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bcdda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:15:25, skipping insertion in model container [2019-11-28 20:15:25,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (2/3) ... [2019-11-28 20:15:25,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bcdda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:15:25, skipping insertion in model container [2019-11-28 20:15:25,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:25" (3/3) ... [2019-11-28 20:15:25,434 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2019-11-28 20:15:25,442 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:15:25,454 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-28 20:15:25,465 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-28 20:15:25,484 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:15:25,485 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:15:25,485 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:15:25,485 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:15:25,486 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:15:25,486 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:15:25,486 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:15:25,486 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:15:25,499 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-11-28 20:15:25,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:15:25,508 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:25,510 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:25,510 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:25,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:25,517 INFO L82 PathProgramCache]: Analyzing trace with hash 870255052, now seen corresponding path program 1 times [2019-11-28 20:15:25,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:25,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672247619] [2019-11-28 20:15:25,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:25,694 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 20:15:25,695 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672247619] [2019-11-28 20:15:25,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:25,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:15:25,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278110322] [2019-11-28 20:15:25,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:15:25,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:25,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:15:25,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:15:25,724 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2019-11-28 20:15:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:25,841 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2019-11-28 20:15:25,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:15:25,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 20:15:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:25,854 INFO L225 Difference]: With dead ends: 49 [2019-11-28 20:15:25,855 INFO L226 Difference]: Without dead ends: 42 [2019-11-28 20:15:25,857 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:15:25,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-28 20:15:25,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2019-11-28 20:15:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 20:15:25,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-11-28 20:15:25,901 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 9 [2019-11-28 20:15:25,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:25,901 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-11-28 20:15:25,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:15:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-11-28 20:15:25,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:15:25,903 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:25,903 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:25,904 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:25,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1207451266, now seen corresponding path program 1 times [2019-11-28 20:15:25,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:25,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900483794] [2019-11-28 20:15:25,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,001 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 20:15:26,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900483794] [2019-11-28 20:15:26,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:26,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:15:26,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414338440] [2019-11-28 20:15:26,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:15:26,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:26,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:15:26,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:15:26,006 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2019-11-28 20:15:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:26,133 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2019-11-28 20:15:26,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:15:26,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 20:15:26,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:26,135 INFO L225 Difference]: With dead ends: 40 [2019-11-28 20:15:26,135 INFO L226 Difference]: Without dead ends: 39 [2019-11-28 20:15:26,136 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:15:26,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-28 20:15:26,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-11-28 20:15:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 20:15:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-11-28 20:15:26,142 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 10 [2019-11-28 20:15:26,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:26,143 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-11-28 20:15:26,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:15:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-11-28 20:15:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:15:26,144 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:26,144 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:26,145 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:26,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:26,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1207452581, now seen corresponding path program 1 times [2019-11-28 20:15:26,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:26,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917743490] [2019-11-28 20:15:26,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,216 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 20:15:26,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917743490] [2019-11-28 20:15:26,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:26,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:15:26,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369221729] [2019-11-28 20:15:26,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:15:26,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:26,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:15:26,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:15:26,220 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 4 states. [2019-11-28 20:15:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:26,302 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-11-28 20:15:26,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:15:26,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 20:15:26,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:26,304 INFO L225 Difference]: With dead ends: 29 [2019-11-28 20:15:26,304 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 20:15:26,305 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:15:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 20:15:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 20:15:26,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 20:15:26,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-11-28 20:15:26,309 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 10 [2019-11-28 20:15:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:26,310 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-11-28 20:15:26,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:15:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-11-28 20:15:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:15:26,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:26,311 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:26,311 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:26,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1207452582, now seen corresponding path program 1 times [2019-11-28 20:15:26,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:26,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915346489] [2019-11-28 20:15:26,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,427 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 20:15:26,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915346489] [2019-11-28 20:15:26,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:26,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:15:26,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432787315] [2019-11-28 20:15:26,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:15:26,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:26,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:15:26,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:15:26,432 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2019-11-28 20:15:26,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:26,505 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-28 20:15:26,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:15:26,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 20:15:26,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:26,507 INFO L225 Difference]: With dead ends: 27 [2019-11-28 20:15:26,507 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 20:15:26,508 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:15:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 20:15:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-28 20:15:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 20:15:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-28 20:15:26,516 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 10 [2019-11-28 20:15:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:26,516 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-28 20:15:26,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:15:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-28 20:15:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 20:15:26,519 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:26,519 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:26,519 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:26,520 INFO L82 PathProgramCache]: Analyzing trace with hash -821123348, now seen corresponding path program 1 times [2019-11-28 20:15:26,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:26,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516766000] [2019-11-28 20:15:26,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:26,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516766000] [2019-11-28 20:15:26,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:26,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:15:26,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426949766] [2019-11-28 20:15:26,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:15:26,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:26,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:15:26,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:15:26,663 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 5 states. [2019-11-28 20:15:26,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:26,770 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2019-11-28 20:15:26,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:15:26,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-28 20:15:26,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:26,772 INFO L225 Difference]: With dead ends: 35 [2019-11-28 20:15:26,773 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 20:15:26,774 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:15:26,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 20:15:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-11-28 20:15:26,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 20:15:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-28 20:15:26,784 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2019-11-28 20:15:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:26,785 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-28 20:15:26,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:15:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-28 20:15:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 20:15:26,788 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:26,788 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:26,788 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:26,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:26,789 INFO L82 PathProgramCache]: Analyzing trace with hash -821123347, now seen corresponding path program 1 times [2019-11-28 20:15:26,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:26,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583278658] [2019-11-28 20:15:26,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:26,940 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583278658] [2019-11-28 20:15:26,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:26,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:15:26,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892725621] [2019-11-28 20:15:26,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:15:26,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:26,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:15:26,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:15:26,945 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2019-11-28 20:15:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:27,059 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2019-11-28 20:15:27,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:15:27,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-28 20:15:27,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:27,062 INFO L225 Difference]: With dead ends: 39 [2019-11-28 20:15:27,062 INFO L226 Difference]: Without dead ends: 39 [2019-11-28 20:15:27,064 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:15:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-28 20:15:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2019-11-28 20:15:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 20:15:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-28 20:15:27,076 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 16 [2019-11-28 20:15:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:27,076 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-28 20:15:27,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:15:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-28 20:15:27,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 20:15:27,078 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:27,078 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:27,078 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:27,079 INFO L82 PathProgramCache]: Analyzing trace with hash -821123391, now seen corresponding path program 1 times [2019-11-28 20:15:27,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:27,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690144066] [2019-11-28 20:15:27,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:27,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690144066] [2019-11-28 20:15:27,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:27,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:15:27,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329038941] [2019-11-28 20:15:27,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:15:27,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:15:27,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:15:27,183 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2019-11-28 20:15:27,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:27,260 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2019-11-28 20:15:27,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:15:27,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-28 20:15:27,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:27,262 INFO L225 Difference]: With dead ends: 37 [2019-11-28 20:15:27,262 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 20:15:27,263 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:15:27,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 20:15:27,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-28 20:15:27,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 20:15:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-11-28 20:15:27,267 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2019-11-28 20:15:27,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:27,267 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-11-28 20:15:27,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:15:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-11-28 20:15:27,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:15:27,268 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:27,268 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:27,269 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:27,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:27,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1174445805, now seen corresponding path program 1 times [2019-11-28 20:15:27,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:27,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400181999] [2019-11-28 20:15:27,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:27,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400181999] [2019-11-28 20:15:27,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:27,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 20:15:27,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322846722] [2019-11-28 20:15:27,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:15:27,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:27,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:15:27,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:15:27,380 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 6 states. [2019-11-28 20:15:27,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:27,488 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2019-11-28 20:15:27,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:15:27,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-28 20:15:27,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:27,490 INFO L225 Difference]: With dead ends: 34 [2019-11-28 20:15:27,490 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 20:15:27,491 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:15:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 20:15:27,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-11-28 20:15:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 20:15:27,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-11-28 20:15:27,495 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 18 [2019-11-28 20:15:27,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:27,496 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2019-11-28 20:15:27,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:15:27,496 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2019-11-28 20:15:27,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 20:15:27,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:27,498 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:27,498 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:27,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1116213141, now seen corresponding path program 1 times [2019-11-28 20:15:27,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:27,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506499797] [2019-11-28 20:15:27,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:27,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506499797] [2019-11-28 20:15:27,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834233600] [2019-11-28 20:15:27,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:15:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:27,779 INFO L264 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-28 20:15:27,785 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:27,870 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-28 20:15:27,872 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:27,882 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:27,893 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-28 20:15:27,894 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:27,899 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:27,899 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:27,900 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-11-28 20:15:27,962 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-28 20:15:27,963 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:27,978 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:27,983 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-28 20:15:27,984 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:27,993 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:27,993 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:27,994 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-28 20:15:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:28,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:15:28,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 10 [2019-11-28 20:15:28,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124246814] [2019-11-28 20:15:28,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 20:15:28,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:28,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 20:15:28,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:15:28,002 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 10 states. [2019-11-28 20:15:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:28,237 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2019-11-28 20:15:28,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 20:15:28,238 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2019-11-28 20:15:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:28,239 INFO L225 Difference]: With dead ends: 46 [2019-11-28 20:15:28,239 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 20:15:28,240 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:15:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 20:15:28,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2019-11-28 20:15:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-28 20:15:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-11-28 20:15:28,245 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 21 [2019-11-28 20:15:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:28,245 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2019-11-28 20:15:28,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 20:15:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2019-11-28 20:15:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 20:15:28,246 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:28,246 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:28,452 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:15:28,453 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:28,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1116213098, now seen corresponding path program 1 times [2019-11-28 20:15:28,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:28,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755986735] [2019-11-28 20:15:28,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:15:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:15:28,539 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:15:28,539 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:15:28,574 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 20:15:28,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:15:28 BoogieIcfgContainer [2019-11-28 20:15:28,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:15:28,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:15:28,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:15:28,610 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:15:28,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:25" (3/4) ... [2019-11-28 20:15:28,615 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:15:28,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:15:28,618 INFO L168 Benchmark]: Toolchain (without parser) took 4511.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 949.6 MB in the beginning and 810.3 MB in the end (delta: 139.3 MB). Peak memory consumption was 278.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:28,618 INFO L168 Benchmark]: CDTParser took 0.31 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 20:15:28,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:28,626 INFO L168 Benchmark]: Boogie Preprocessor took 60.74 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:28,626 INFO L168 Benchmark]: RCFGBuilder took 618.60 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: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:28,628 INFO L168 Benchmark]: TraceAbstraction took 3180.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 810.3 MB in the end (delta: 257.5 MB). Peak memory consumption was 257.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:28,633 INFO L168 Benchmark]: Witness Printer took 7.03 ms. Allocated memory is still 1.2 GB. Free memory is still 810.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:15:28,642 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 640.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.74 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 618.60 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: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3180.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 810.3 MB in the end (delta: 257.5 MB). Peak memory consumption was 257.5 MB. Max. memory is 11.5 GB. * Witness Printer took 7.03 ms. Allocated memory is still 1.2 GB. Free memory is still 810.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] List t; [L522] List p = 0; VAL [p={0:0}] [L523] COND TRUE __VERIFIER_nondet_int() [L524] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L525] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L526] t->h = 1 VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L527] t->n = p VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L528] p = t VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L523] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L531] EXPR p->h VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-1:0}] [L531] COND FALSE !(p->h != 1) [L534] EXPR p->n VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={0:0}, t={-1:0}] [L534] p = p->n [L530] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 51 locations, 10 error locations. Result: UNSAFE, OverallTime: 3.0s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 171 SDtfs, 228 SDslu, 166 SDs, 0 SdLazy, 500 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 13383 SizeOfPredicates, 11 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 10/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 20:15:30,687 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-28 20:15:30,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:15:30,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:15:30,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:15:30,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:15:30,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:15:30,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:15:30,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:15:30,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:15:30,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:15:30,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:15:30,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:15:30,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-28 20:15:30,770 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:15:30,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:15:30,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:15:30,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:15:30,772 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:15:30,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:15:30,773 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:15:30,773 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:15:30,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:15:30,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:15:30,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:15:30,774 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:15:30,774 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:15:30,776 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:15:30,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:15:30,776 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:15:30,777 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 20:15:30,777 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 20:15:30,777 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:15:30,777 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:15:30,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:15:30,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:15:30,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:15:30,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:15:30,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:15:30,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:15:30,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:15:30,780 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 20:15:30,780 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 20:15:30,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:15:30,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 20:15:30,781 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 41b5142f2d6582efd6d9a128e4dfef83faaab097 [2019-11-28 20:15:31,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:15:31,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:15:31,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:15:31,130 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:15:31,131 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:15:31,132 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-11-28 20:15:31,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65016e36/141533f4d65040cea5d4bf1916f47fcd/FLAG7752e403d [2019-11-28 20:15:31,764 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:15:31,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-11-28 20:15:31,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65016e36/141533f4d65040cea5d4bf1916f47fcd/FLAG7752e403d [2019-11-28 20:15:32,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65016e36/141533f4d65040cea5d4bf1916f47fcd [2019-11-28 20:15:32,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:15:32,031 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:15:32,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:15:32,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:15:32,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:15:32,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:15:32" (1/1) ... [2019-11-28 20:15:32,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9b4597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:32, skipping insertion in model container [2019-11-28 20:15:32,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:15:32" (1/1) ... [2019-11-28 20:15:32,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:15:32,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:15:32,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:15:32,544 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:15:32,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:15:32,646 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:15:32,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:32 WrapperNode [2019-11-28 20:15:32,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:15:32,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:15:32,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:15:32,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:15:32,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:32" (1/1) ... [2019-11-28 20:15:32,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:32" (1/1) ... [2019-11-28 20:15:32,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:32" (1/1) ... [2019-11-28 20:15:32,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:32" (1/1) ... [2019-11-28 20:15:32,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:32" (1/1) ... [2019-11-28 20:15:32,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:32" (1/1) ... [2019-11-28 20:15:32,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:32" (1/1) ... [2019-11-28 20:15:32,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:15:32,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:15:32,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:15:32,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:15:32,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:32" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:15:32,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:15:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:15:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 20:15:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:15:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:15:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:15:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:15:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:15:32,783 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-28 20:15:32,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:15:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 20:15:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:15:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:15:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:15:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:15:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:15:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:15:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:15:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:15:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:15:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:15:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:15:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:15:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:15:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:15:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:15:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:15:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:15:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:15:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:15:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:15:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:15:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:15:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:15:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:15:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:15:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:15:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:15:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:15:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:15:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:15:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:15:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:15:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:15:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:15:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:15:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:15:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:15:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:15:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:15:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:15:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:15:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:15:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:15:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:15:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:15:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:15:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:15:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:15:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:15:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:15:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:15:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:15:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:15:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:15:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:15:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:15:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:15:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:15:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:15:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:15:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:15:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:15:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:15:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:15:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:15:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:15:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:15:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:15:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:15:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:15:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:15:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:15:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:15:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:15:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:15:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:15:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:15:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:15:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:15:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:15:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:15:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:15:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:15:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:15:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:15:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:15:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:15:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:15:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:15:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:15:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:15:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:15:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:15:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:15:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:15:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:15:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:15:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:15:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:15:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:15:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:15:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:15:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:15:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:15:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:15:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:15:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:15:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:15:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-28 20:15:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:15:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 20:15:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 20:15:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 20:15:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 20:15:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 20:15:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:15:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:15:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 20:15:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:15:33,243 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-28 20:15:33,407 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:15:33,407 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 20:15:33,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:33 BoogieIcfgContainer [2019-11-28 20:15:33,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:15:33,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:15:33,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:15:33,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:15:33,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:15:32" (1/3) ... [2019-11-28 20:15:33,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3142a297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:15:33, skipping insertion in model container [2019-11-28 20:15:33,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:32" (2/3) ... [2019-11-28 20:15:33,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3142a297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:15:33, skipping insertion in model container [2019-11-28 20:15:33,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:33" (3/3) ... [2019-11-28 20:15:33,417 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2019-11-28 20:15:33,428 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:15:33,437 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-28 20:15:33,451 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-28 20:15:33,472 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:15:33,472 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:15:33,473 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:15:33,473 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:15:33,473 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:15:33,473 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:15:33,474 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:15:33,474 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:15:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-28 20:15:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:15:33,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:33,496 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:33,496 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:33,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:33,501 INFO L82 PathProgramCache]: Analyzing trace with hash -72951773, now seen corresponding path program 1 times [2019-11-28 20:15:33,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:33,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390731106] [2019-11-28 20:15:33,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:33,648 INFO L264 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:15:33,655 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:33,698 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 20:15:33,698 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:33,715 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 20:15:33,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390731106] [2019-11-28 20:15:33,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:33,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 20:15:33,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210116682] [2019-11-28 20:15:33,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:15:33,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:33,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:15:33,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:15:33,745 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2019-11-28 20:15:33,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:33,848 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-11-28 20:15:33,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:15:33,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 20:15:33,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:33,859 INFO L225 Difference]: With dead ends: 47 [2019-11-28 20:15:33,859 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 20:15:33,861 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:15:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 20:15:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2019-11-28 20:15:33,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 20:15:33,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-11-28 20:15:33,893 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 9 [2019-11-28 20:15:33,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:33,894 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-11-28 20:15:33,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:15:33,894 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-11-28 20:15:33,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:15:33,895 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:33,895 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:34,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 20:15:34,098 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:34,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:34,099 INFO L82 PathProgramCache]: Analyzing trace with hash -72951730, now seen corresponding path program 1 times [2019-11-28 20:15:34,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:34,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018122320] [2019-11-28 20:15:34,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:34,226 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 20:15:34,229 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:34,263 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 20:15:34,264 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:34,276 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 20:15:34,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018122320] [2019-11-28 20:15:34,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:34,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-28 20:15:34,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290356513] [2019-11-28 20:15:34,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:15:34,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:34,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:15:34,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:15:34,285 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 3 states. [2019-11-28 20:15:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:34,344 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2019-11-28 20:15:34,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:15:34,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 20:15:34,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:34,346 INFO L225 Difference]: With dead ends: 38 [2019-11-28 20:15:34,346 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 20:15:34,348 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:15:34,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 20:15:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2019-11-28 20:15:34,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 20:15:34,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-11-28 20:15:34,358 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2019-11-28 20:15:34,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:34,358 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-11-28 20:15:34,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:15:34,359 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-11-28 20:15:34,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:15:34,359 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:34,360 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:34,578 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 20:15:34,581 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:34,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:34,582 INFO L82 PathProgramCache]: Analyzing trace with hash -72950415, now seen corresponding path program 1 times [2019-11-28 20:15:34,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:34,583 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561917032] [2019-11-28 20:15:34,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:34,682 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 20:15:34,684 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:34,743 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-28 20:15:34,743 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:34,749 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:34,750 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:34,750 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-28 20:15:34,757 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 20:15:34,759 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:34,774 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 20:15:34,774 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561917032] [2019-11-28 20:15:34,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:34,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 20:15:34,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049475928] [2019-11-28 20:15:34,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:15:34,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:34,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:15:34,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:15:34,779 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2019-11-28 20:15:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:34,852 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-28 20:15:34,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:15:34,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 20:15:34,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:34,854 INFO L225 Difference]: With dead ends: 27 [2019-11-28 20:15:34,854 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 20:15:34,855 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:15:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 20:15:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-28 20:15:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 20:15:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-28 20:15:34,859 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2019-11-28 20:15:34,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:34,859 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-28 20:15:34,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:15:34,860 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-28 20:15:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:15:34,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:34,860 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:35,061 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 20:15:35,062 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:35,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:35,062 INFO L82 PathProgramCache]: Analyzing trace with hash -72950414, now seen corresponding path program 1 times [2019-11-28 20:15:35,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:35,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686552407] [2019-11-28 20:15:35,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:35,153 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:15:35,155 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:35,169 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-28 20:15:35,170 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:35,177 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:35,179 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:35,179 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-28 20:15:35,191 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 20:15:35,191 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:35,252 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 20:15:35,253 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686552407] [2019-11-28 20:15:35,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:35,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-28 20:15:35,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008825867] [2019-11-28 20:15:35,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:15:35,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:35,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:15:35,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:15:35,255 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2019-11-28 20:15:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:35,315 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-11-28 20:15:35,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:15:35,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-28 20:15:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:35,317 INFO L225 Difference]: With dead ends: 25 [2019-11-28 20:15:35,318 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 20:15:35,318 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:15:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 20:15:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-28 20:15:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 20:15:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-11-28 20:15:35,323 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 9 [2019-11-28 20:15:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:35,323 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-11-28 20:15:35,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:15:35,324 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-11-28 20:15:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 20:15:35,325 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:35,325 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:35,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 20:15:35,535 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:35,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:35,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1029445870, now seen corresponding path program 1 times [2019-11-28 20:15:35,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:35,538 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882347606] [2019-11-28 20:15:35,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:35,632 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:15:35,634 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:35,648 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:35,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882347606] [2019-11-28 20:15:35,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:35,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-28 20:15:35,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52518711] [2019-11-28 20:15:35,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:15:35,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:35,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:15:35,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:15:35,659 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2019-11-28 20:15:35,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:35,783 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2019-11-28 20:15:35,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:15:35,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 20:15:35,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:35,785 INFO L225 Difference]: With dead ends: 40 [2019-11-28 20:15:35,785 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 20:15:35,786 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:15:35,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 20:15:35,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2019-11-28 20:15:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 20:15:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-11-28 20:15:35,792 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 14 [2019-11-28 20:15:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:35,792 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-11-28 20:15:35,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:15:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-11-28 20:15:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 20:15:35,797 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:35,797 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:35,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 20:15:35,998 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:35,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1029445913, now seen corresponding path program 1 times [2019-11-28 20:15:35,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:35,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690144066] [2019-11-28 20:15:35,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:36,095 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:15:36,096 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:36,106 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-28 20:15:36,106 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:36,110 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:36,110 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:36,110 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-28 20:15:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:36,128 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:36,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690144066] [2019-11-28 20:15:36,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:36,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-28 20:15:36,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129549320] [2019-11-28 20:15:36,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:15:36,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:36,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:15:36,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:15:36,155 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 4 states. [2019-11-28 20:15:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:36,270 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-11-28 20:15:36,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:15:36,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 20:15:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:36,272 INFO L225 Difference]: With dead ends: 31 [2019-11-28 20:15:36,272 INFO L226 Difference]: Without dead ends: 31 [2019-11-28 20:15:36,273 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:15:36,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-28 20:15:36,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-11-28 20:15:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 20:15:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-11-28 20:15:36,278 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 14 [2019-11-28 20:15:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:36,278 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-11-28 20:15:36,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:15:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-11-28 20:15:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 20:15:36,279 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:36,279 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:36,480 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-28 20:15:36,481 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:36,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:36,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1029445914, now seen corresponding path program 1 times [2019-11-28 20:15:36,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:36,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400181999] [2019-11-28 20:15:36,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:36,606 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 20:15:36,608 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:36,619 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-28 20:15:36,619 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:36,627 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:36,628 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:36,628 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-28 20:15:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:36,651 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:36,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400181999] [2019-11-28 20:15:36,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:36,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-28 20:15:36,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575268820] [2019-11-28 20:15:36,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:15:36,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:36,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:15:36,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:15:36,752 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2019-11-28 20:15:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:36,923 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2019-11-28 20:15:36,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:15:36,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-28 20:15:36,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:36,924 INFO L225 Difference]: With dead ends: 35 [2019-11-28 20:15:36,924 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 20:15:36,925 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:15:36,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 20:15:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-11-28 20:15:36,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 20:15:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-28 20:15:36,929 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 14 [2019-11-28 20:15:36,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:36,929 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-28 20:15:36,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:15:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-28 20:15:36,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 20:15:36,930 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:36,931 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:37,138 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-28 20:15:37,139 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:37,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1455045754, now seen corresponding path program 1 times [2019-11-28 20:15:37,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:37,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839228536] [2019-11-28 20:15:37,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:37,246 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:15:37,248 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:37,258 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-28 20:15:37,258 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:37,263 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:37,263 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:37,263 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-28 20:15:37,297 INFO L343 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2019-11-28 20:15:37,298 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2019-11-28 20:15:37,298 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:37,302 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:37,302 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:37,302 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:7 [2019-11-28 20:15:37,321 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-28 20:15:37,321 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:37,324 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:37,324 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:37,324 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:5 [2019-11-28 20:15:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:37,335 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:37,348 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 20:15:37,351 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:37,352 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 20:15:37,352 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:14 [2019-11-28 20:15:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:37,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839228536] [2019-11-28 20:15:37,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:37,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-28 20:15:37,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137354717] [2019-11-28 20:15:37,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:15:37,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:37,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:15:37,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:15:37,371 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2019-11-28 20:15:37,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:37,527 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-11-28 20:15:37,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:15:37,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-28 20:15:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:37,531 INFO L225 Difference]: With dead ends: 32 [2019-11-28 20:15:37,532 INFO L226 Difference]: Without dead ends: 32 [2019-11-28 20:15:37,532 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:15:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-28 20:15:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2019-11-28 20:15:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 20:15:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-11-28 20:15:37,536 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2019-11-28 20:15:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:37,536 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-11-28 20:15:37,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:15:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-11-28 20:15:37,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 20:15:37,538 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:37,538 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:37,744 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-28 20:15:37,745 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 20:15:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:37,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1832010702, now seen corresponding path program 1 times [2019-11-28 20:15:37,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:37,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487196730] [2019-11-28 20:15:37,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:15:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:15:37,924 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 20:15:37,925 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:15:38,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-11-28 20:15:38,138 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 20:15:38,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:15:38 BoogieIcfgContainer [2019-11-28 20:15:38,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:15:38,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:15:38,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:15:38,163 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:15:38,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:33" (3/4) ... [2019-11-28 20:15:38,166 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:15:38,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:15:38,168 INFO L168 Benchmark]: Toolchain (without parser) took 6137.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -109.2 MB). Peak memory consumption was 104.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:38,168 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:15:38,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:38,170 INFO L168 Benchmark]: Boogie Preprocessor took 74.66 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:38,171 INFO L168 Benchmark]: RCFGBuilder took 685.93 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: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:38,171 INFO L168 Benchmark]: TraceAbstraction took 4752.56 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 73.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:38,172 INFO L168 Benchmark]: Witness Printer took 4.00 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 20:15:38,175 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 613.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 74.66 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 685.93 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: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4752.56 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 73.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.00 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. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] List t; [L522] List p = 0; VAL [p={0:0}] [L523] COND TRUE __VERIFIER_nondet_int() [L524] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L525] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L526] t->h = 1 VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L527] t->n = p VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L528] p = t VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, t={1:0}] [L523] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, t={1:0}] [L531] EXPR p->h VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=1, t={1:0}] [L531] COND FALSE !(p->h != 1) [L534] EXPR p->n VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, p->n={0:0}, t={1:0}] [L534] p = p->n [L530] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 56 locations, 10 error locations. Result: UNSAFE, OverallTime: 4.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 153 SDtfs, 190 SDslu, 124 SDs, 0 SdLazy, 177 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 7188 SizeOfPredicates, 22 NumberOfNonLiveVariables, 400 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...