./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/splice-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/splice-2.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 cac090f4bce8d8ee66db31cac76f8c06713c6de9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 -Xmx15G -Xms4m -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/splice-2.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 cac090f4bce8d8ee66db31cac76f8c06713c6de9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:07:48,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:07:48,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:07:48,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:07:48,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:07:48,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:07:48,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:07:48,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:07:48,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:07:48,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:07:48,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:07:48,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:07:48,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:07:48,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:07:48,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:07:48,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:07:48,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:07:48,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:07:48,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:07:48,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:07:48,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:07:48,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:07:48,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:07:48,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:07:48,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:07:48,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:07:48,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:07:48,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:07:48,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:07:48,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:07:48,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:07:48,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:07:48,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:07:48,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:07:48,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:07:48,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:07:48,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:07:48,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:07:48,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:07:48,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:07:48,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:07:48,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:07:48,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:07:48,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:07:48,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:07:48,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:07:48,829 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:07:48,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:07:48,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:07:48,830 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:07:48,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:07:48,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:07:48,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:07:48,831 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:07:48,832 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:07:48,832 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:07:48,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:07:48,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:07:48,833 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:07:48,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:07:48,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:07:48,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:07:48,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:07:48,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:07:48,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:07:48,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:07:48,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:07:48,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:07:48,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:07:48,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:07:48,836 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 -> cac090f4bce8d8ee66db31cac76f8c06713c6de9 [2020-10-20 06:07:49,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:07:49,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:07:49,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:07:49,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:07:49,076 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:07:49,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/splice-2.i [2020-10-20 06:07:49,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7745fa048/6ab594d550304c8c8ac5ad60d49221a8/FLAG8ea0e2cbf [2020-10-20 06:07:49,787 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:07:49,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-2.i [2020-10-20 06:07:49,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7745fa048/6ab594d550304c8c8ac5ad60d49221a8/FLAG8ea0e2cbf [2020-10-20 06:07:50,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7745fa048/6ab594d550304c8c8ac5ad60d49221a8 [2020-10-20 06:07:50,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:07:50,118 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:07:50,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:50,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:07:50,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:07:50,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:50" (1/1) ... [2020-10-20 06:07:50,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@279b5aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:50, skipping insertion in model container [2020-10-20 06:07:50,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:50" (1/1) ... [2020-10-20 06:07:50,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:07:50,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:07:50,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:50,540 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:07:50,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:50,654 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:07:50,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:50 WrapperNode [2020-10-20 06:07:50,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:50,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:07:50,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:07:50,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:07:50,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:50" (1/1) ... [2020-10-20 06:07:50,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:50" (1/1) ... [2020-10-20 06:07:50,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:50" (1/1) ... [2020-10-20 06:07:50,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:50" (1/1) ... [2020-10-20 06:07:50,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:50" (1/1) ... [2020-10-20 06:07:50,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:50" (1/1) ... [2020-10-20 06:07:50,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:50" (1/1) ... [2020-10-20 06:07:50,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:07:50,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:07:50,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:07:50,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:07:50,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:50" (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 [2020-10-20 06:07:50,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:07:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:07:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:07:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:07:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:07:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:07:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:07:50,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:07:50,801 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 06:07:50,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:07:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:07:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:07:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:07:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:07:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:07:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:07:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:07:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:07:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:07:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:07:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:07:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:07:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:07:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:07:50,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:07:50,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:07:50,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:07:50,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:07:50,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:07:50,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:07:50,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:07:50,806 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:07:50,806 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:07:50,807 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:07:50,807 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:07:50,807 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:07:50,807 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:07:50,807 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:07:50,808 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:07:50,808 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:07:50,808 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:07:50,808 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:07:50,808 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:07:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:07:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:07:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:07:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:07:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:07:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:07:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:07:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:07:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:07:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:07:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:07:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:07:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:07:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:07:50,812 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:07:50,812 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:07:50,812 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:07:50,812 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:07:50,812 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:07:50,813 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:07:50,813 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:07:50,813 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:07:50,813 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:07:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:07:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:07:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:07:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:07:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:07:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:07:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:07:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:07:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:07:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:07:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:07:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:07:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:07:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:07:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:07:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:07:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:07:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:07:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:07:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:07:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:07:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:07:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:07:50,819 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:07:50,819 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:07:50,819 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:07:50,819 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:07:50,819 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:07:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:07:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:07:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:07:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:07:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:07:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:07:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:07:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:07:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:07:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:07:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:07:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:07:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:07:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:07:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:07:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:07:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:07:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:07:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:07:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:07:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:07:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:07:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:07:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:07:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:07:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:07:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:07:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:07:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:07:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 06:07:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:07:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:07:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:07:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:07:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:07:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:07:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:07:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:07:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:07:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:07:51,221 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 06:07:51,503 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:07:51,504 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:07:51,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:51 BoogieIcfgContainer [2020-10-20 06:07:51,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:07:51,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:07:51,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:07:51,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:07:51,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:07:50" (1/3) ... [2020-10-20 06:07:51,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d05e438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:51, skipping insertion in model container [2020-10-20 06:07:51,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:50" (2/3) ... [2020-10-20 06:07:51,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d05e438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:51, skipping insertion in model container [2020-10-20 06:07:51,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:51" (3/3) ... [2020-10-20 06:07:51,516 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2020-10-20 06:07:51,528 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:07:51,537 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-10-20 06:07:51,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-10-20 06:07:51,572 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:07:51,573 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:07:51,573 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:07:51,574 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:07:51,574 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:07:51,574 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:07:51,574 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:07:51,574 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:07:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-20 06:07:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:07:51,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:51,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:51,607 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:51,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:51,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1115108894, now seen corresponding path program 1 times [2020-10-20 06:07:51,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:51,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468834068] [2020-10-20 06:07:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:51,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468834068] [2020-10-20 06:07:51,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:51,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:07:51,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106871625] [2020-10-20 06:07:51,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:07:51,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:51,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:07:51,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:07:51,889 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2020-10-20 06:07:52,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:52,115 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-10-20 06:07:52,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:07:52,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 06:07:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:52,127 INFO L225 Difference]: With dead ends: 86 [2020-10-20 06:07:52,128 INFO L226 Difference]: Without dead ends: 79 [2020-10-20 06:07:52,130 INFO L677 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 [2020-10-20 06:07:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-20 06:07:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-20 06:07:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-20 06:07:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2020-10-20 06:07:52,175 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 10 [2020-10-20 06:07:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:52,176 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2020-10-20 06:07:52,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:07:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2020-10-20 06:07:52,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:07:52,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:52,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:52,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:07:52,178 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:52,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:52,178 INFO L82 PathProgramCache]: Analyzing trace with hash -208672984, now seen corresponding path program 1 times [2020-10-20 06:07:52,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:52,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471761893] [2020-10-20 06:07:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:52,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471761893] [2020-10-20 06:07:52,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:52,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:07:52,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609675235] [2020-10-20 06:07:52,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:07:52,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:52,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:07:52,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:52,346 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 5 states. [2020-10-20 06:07:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:52,630 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-20 06:07:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:52,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 06:07:52,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:52,632 INFO L225 Difference]: With dead ends: 86 [2020-10-20 06:07:52,633 INFO L226 Difference]: Without dead ends: 86 [2020-10-20 06:07:52,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:07:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-20 06:07:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2020-10-20 06:07:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 06:07:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2020-10-20 06:07:52,645 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 11 [2020-10-20 06:07:52,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:52,646 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2020-10-20 06:07:52,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:07:52,646 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2020-10-20 06:07:52,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:07:52,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:52,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:52,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:07:52,648 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:52,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:52,648 INFO L82 PathProgramCache]: Analyzing trace with hash -208672983, now seen corresponding path program 1 times [2020-10-20 06:07:52,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:52,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150245234] [2020-10-20 06:07:52,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:52,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150245234] [2020-10-20 06:07:52,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:52,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:07:52,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848086899] [2020-10-20 06:07:52,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:07:52,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:52,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:07:52,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:52,744 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand 5 states. [2020-10-20 06:07:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:53,006 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-10-20 06:07:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:53,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 06:07:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:53,009 INFO L225 Difference]: With dead ends: 94 [2020-10-20 06:07:53,009 INFO L226 Difference]: Without dead ends: 94 [2020-10-20 06:07:53,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:07:53,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-20 06:07:53,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2020-10-20 06:07:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-20 06:07:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2020-10-20 06:07:53,019 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 11 [2020-10-20 06:07:53,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:53,020 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2020-10-20 06:07:53,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:07:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2020-10-20 06:07:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:07:53,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:53,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:53,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:07:53,022 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:53,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:53,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1759143106, now seen corresponding path program 1 times [2020-10-20 06:07:53,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:53,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215168511] [2020-10-20 06:07:53,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:07:53,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:07:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:07:53,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:07:53,120 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:07:53,121 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:07:53,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:07:53,144 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-20 06:07:53,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:07:53 BoogieIcfgContainer [2020-10-20 06:07:53,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:07:53,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:07:53,188 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:07:53,189 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:07:53,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:51" (3/4) ... [2020-10-20 06:07:53,198 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:07:53,199 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:07:53,202 INFO L168 Benchmark]: Toolchain (without parser) took 3095.40 ms. Allocated memory was 38.8 MB in the beginning and 57.7 MB in the end (delta: 18.9 MB). Free memory was 12.9 MB in the beginning and 26.4 MB in the end (delta: -13.5 MB). Peak memory consumption was 5.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:53,204 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 30.4 MB. Free memory was 15.5 MB in the beginning and 15.5 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:07:53,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.31 ms. Allocated memory was 39.3 MB in the beginning and 40.9 MB in the end (delta: 1.6 MB). Free memory was 20.6 MB in the beginning and 11.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:53,206 INFO L168 Benchmark]: Boogie Preprocessor took 67.01 ms. Allocated memory is still 40.9 MB. Free memory was 11.9 MB in the beginning and 9.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:53,207 INFO L168 Benchmark]: RCFGBuilder took 772.36 ms. Allocated memory was 41.4 MB in the beginning and 45.6 MB in the end (delta: 4.2 MB). Free memory was 24.6 MB in the beginning and 19.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:53,208 INFO L168 Benchmark]: TraceAbstraction took 1677.48 ms. Allocated memory was 45.6 MB in the beginning and 57.7 MB in the end (delta: 12.1 MB). Free memory was 18.7 MB in the beginning and 27.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:53,209 INFO L168 Benchmark]: Witness Printer took 13.23 ms. Allocated memory is still 57.7 MB. Free memory was 27.0 MB in the beginning and 26.4 MB in the end (delta: 550.9 kB). Peak memory consumption was 550.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:07:53,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 30.4 MB. Free memory was 15.5 MB in the beginning and 15.5 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 535.31 ms. Allocated memory was 39.3 MB in the beginning and 40.9 MB in the end (delta: 1.6 MB). Free memory was 20.6 MB in the beginning and 11.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 67.01 ms. Allocated memory is still 40.9 MB. Free memory was 11.9 MB in the beginning and 9.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 772.36 ms. Allocated memory was 41.4 MB in the beginning and 45.6 MB in the end (delta: 4.2 MB). Free memory was 24.6 MB in the beginning and 19.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1677.48 ms. Allocated memory was 45.6 MB in the beginning and 57.7 MB in the end (delta: 12.1 MB). Free memory was 18.7 MB in the beginning and 27.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Witness Printer took 13.23 ms. Allocated memory is still 57.7 MB. Free memory was 27.0 MB in the beginning and 26.4 MB in the end (delta: 550.9 kB). Peak memory consumption was 550.9 kB. Max. memory is 14.3 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L555] EXPR a->h VAL [a={-1:0}, a->h=3, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 105 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 178 SDtfs, 233 SDslu, 58 SDs, 0 SdLazy, 395 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1577 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.1.25-9a8b2e8 [2020-10-20 06:07:55,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:07:55,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:07:55,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:07:55,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:07:55,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:07:55,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:07:55,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:07:55,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:07:55,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:07:55,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:07:55,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:07:55,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:07:55,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:07:55,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:07:55,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:07:55,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:07:55,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:07:55,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:07:55,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:07:55,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:07:55,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:07:55,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:07:55,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:07:55,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:07:55,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:07:55,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:07:55,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:07:55,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:07:55,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:07:55,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:07:55,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:07:55,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:07:55,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:07:55,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:07:55,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:07:55,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:07:55,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:07:55,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:07:55,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:07:55,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:07:55,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 06:07:55,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:07:55,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:07:55,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:07:55,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:07:55,626 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:07:55,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:07:55,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:07:55,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:07:55,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:07:55,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:07:55,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:07:55,628 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:07:55,629 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:07:55,629 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:07:55,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:07:55,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:07:55,630 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:07:55,631 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:07:55,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:07:55,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:07:55,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:07:55,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:07:55,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:07:55,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:07:55,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:07:55,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:07:55,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:07:55,633 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:07:55,634 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:07:55,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:07:55,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:07:55,634 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 -> cac090f4bce8d8ee66db31cac76f8c06713c6de9 [2020-10-20 06:07:55,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:07:55,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:07:55,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:07:55,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:07:55,935 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:07:55,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/splice-2.i [2020-10-20 06:07:56,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a4ec49a/677f9c81b3c343c383c2fd0252eb584e/FLAG2a1fb23fe [2020-10-20 06:07:56,642 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:07:56,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-2.i [2020-10-20 06:07:56,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a4ec49a/677f9c81b3c343c383c2fd0252eb584e/FLAG2a1fb23fe [2020-10-20 06:07:56,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a4ec49a/677f9c81b3c343c383c2fd0252eb584e [2020-10-20 06:07:56,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:07:56,884 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:07:56,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:56,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:07:56,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:07:56,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:56" (1/1) ... [2020-10-20 06:07:56,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11310409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56, skipping insertion in model container [2020-10-20 06:07:56,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:56" (1/1) ... [2020-10-20 06:07:56,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:07:56,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:07:57,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:57,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:07:57,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:57,511 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:07:57,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:57 WrapperNode [2020-10-20 06:07:57,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:57,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:07:57,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:07:57,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:07:57,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:57" (1/1) ... [2020-10-20 06:07:57,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:57" (1/1) ... [2020-10-20 06:07:57,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:57" (1/1) ... [2020-10-20 06:07:57,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:57" (1/1) ... [2020-10-20 06:07:57,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:57" (1/1) ... [2020-10-20 06:07:57,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:57" (1/1) ... [2020-10-20 06:07:57,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:57" (1/1) ... [2020-10-20 06:07:57,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:07:57,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:07:57,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:07:57,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:07:57,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:57" (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 [2020-10-20 06:07:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:07:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:07:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:07:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:07:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:07:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:07:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:07:57,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:07:57,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:07:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 06:07:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:07:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:07:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:07:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:07:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:07:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:07:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:07:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:07:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:07:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:07:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:07:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:07:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:07:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:07:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:07:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:07:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:07:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:07:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:07:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:07:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:07:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:07:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:07:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:07:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:07:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:07:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:07:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:07:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:07:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:07:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:07:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:07:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:07:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:07:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:07:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:07:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:07:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:07:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:07:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:07:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:07:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:07:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:07:57,689 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:07:57,689 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:07:57,689 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:07:57,689 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:07:57,689 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:07:57,690 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:07:57,690 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:07:57,690 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:07:57,690 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:07:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:07:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:07:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:07:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:07:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:07:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:07:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:07:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:07:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:07:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:07:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:07:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:07:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:07:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:07:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:07:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:07:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:07:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:07:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:07:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:07:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:07:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:07:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:07:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:07:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:07:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:07:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:07:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:07:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:07:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:07:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:07:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:07:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:07:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:07:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:07:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:07:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:07:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:07:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:07:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:07:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:07:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:07:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:07:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:07:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:07:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:07:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:07:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:07:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:07:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:07:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:07:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:07:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:07:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:07:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:07:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:07:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:07:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:07:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:07:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:07:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:07:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:07:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 06:07:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:07:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:07:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 06:07:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:07:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:07:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 06:07:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:07:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 06:07:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:07:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:07:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 06:07:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 06:07:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:07:58,176 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 06:07:58,555 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:07:58,556 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:07:58,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:58 BoogieIcfgContainer [2020-10-20 06:07:58,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:07:58,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:07:58,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:07:58,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:07:58,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:07:56" (1/3) ... [2020-10-20 06:07:58,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584fe829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:58, skipping insertion in model container [2020-10-20 06:07:58,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:57" (2/3) ... [2020-10-20 06:07:58,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584fe829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:58, skipping insertion in model container [2020-10-20 06:07:58,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:58" (3/3) ... [2020-10-20 06:07:58,568 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2020-10-20 06:07:58,580 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:07:58,588 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-10-20 06:07:58,602 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-10-20 06:07:58,624 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:07:58,624 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:07:58,624 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:07:58,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:07:58,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:07:58,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:07:58,625 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:07:58,625 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:07:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-10-20 06:07:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:07:58,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:58,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:58,655 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:58,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:58,662 INFO L82 PathProgramCache]: Analyzing trace with hash -289182075, now seen corresponding path program 1 times [2020-10-20 06:07:58,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:07:58,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961948001] [2020-10-20 06:07:58,674 INFO L95 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 [2020-10-20 06:07:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:58,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:07:58,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:07:58,941 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:07:58,942 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:58,959 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:58,960 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:58,960 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:07:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:58,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:07:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:59,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961948001] [2020-10-20 06:07:59,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:59,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 06:07:59,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035856759] [2020-10-20 06:07:59,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:07:59,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:07:59,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:07:59,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:07:59,131 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 6 states. [2020-10-20 06:07:59,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:59,988 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2020-10-20 06:07:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:59,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 06:07:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:00,017 INFO L225 Difference]: With dead ends: 118 [2020-10-20 06:08:00,017 INFO L226 Difference]: Without dead ends: 108 [2020-10-20 06:08:00,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:08:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-20 06:08:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2020-10-20 06:08:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-20 06:08:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions. [2020-10-20 06:08:00,071 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 10 [2020-10-20 06:08:00,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:00,071 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions. [2020-10-20 06:08:00,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:08:00,071 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions. [2020-10-20 06:08:00,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:08:00,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:00,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:00,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:08:00,274 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:08:00,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:00,274 INFO L82 PathProgramCache]: Analyzing trace with hash -289182076, now seen corresponding path program 1 times [2020-10-20 06:08:00,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:00,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122515884] [2020-10-20 06:08:00,276 INFO L95 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 [2020-10-20 06:08:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:00,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:08:00,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:00,412 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:08:00,413 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:00,415 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:00,415 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:00,415 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:08:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:00,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:00,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122515884] [2020-10-20 06:08:00,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:00,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 06:08:00,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022147829] [2020-10-20 06:08:00,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:08:00,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:00,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:08:00,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:08:00,452 INFO L87 Difference]: Start difference. First operand 91 states and 108 transitions. Second operand 4 states. [2020-10-20 06:08:00,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:00,701 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-10-20 06:08:00,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:08:00,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 06:08:00,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:00,716 INFO L225 Difference]: With dead ends: 87 [2020-10-20 06:08:00,716 INFO L226 Difference]: Without dead ends: 87 [2020-10-20 06:08:00,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:08:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-20 06:08:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-20 06:08:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-20 06:08:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2020-10-20 06:08:00,728 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 10 [2020-10-20 06:08:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:00,728 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2020-10-20 06:08:00,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:08:00,729 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2020-10-20 06:08:00,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 06:08:00,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:00,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:00,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 06:08:00,950 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:08:00,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:00,951 INFO L82 PathProgramCache]: Analyzing trace with hash 681236439, now seen corresponding path program 1 times [2020-10-20 06:08:00,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:00,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340114148] [2020-10-20 06:08:00,953 INFO L95 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 [2020-10-20 06:08:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:08:01,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:08:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:08:01,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:08:01,193 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 06:08:01,193 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:08:01,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 06:08:01,405 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-20 06:08:01,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:08:01 BoogieIcfgContainer [2020-10-20 06:08:01,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:08:01,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:08:01,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:08:01,420 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:08:01,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:58" (3/4) ... [2020-10-20 06:08:01,424 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:08:01,424 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:08:01,426 INFO L168 Benchmark]: Toolchain (without parser) took 4546.24 ms. Allocated memory was 34.1 MB in the beginning and 61.9 MB in the end (delta: 27.8 MB). Free memory was 13.5 MB in the beginning and 33.1 MB in the end (delta: -19.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:01,427 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 32.5 MB. Free memory was 9.4 MB in the beginning and 9.4 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:08:01,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.84 ms. Allocated memory was 34.1 MB in the beginning and 44.0 MB in the end (delta: 10.0 MB). Free memory was 12.6 MB in the beginning and 20.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:01,429 INFO L168 Benchmark]: Boogie Preprocessor took 80.56 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 17.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:01,430 INFO L168 Benchmark]: RCFGBuilder took 964.74 ms. Allocated memory was 44.0 MB in the beginning and 48.8 MB in the end (delta: 4.7 MB). Free memory was 17.1 MB in the beginning and 24.4 MB in the end (delta: -7.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:01,431 INFO L168 Benchmark]: TraceAbstraction took 2859.88 ms. Allocated memory was 48.8 MB in the beginning and 61.9 MB in the end (delta: 13.1 MB). Free memory was 24.1 MB in the beginning and 33.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:01,432 INFO L168 Benchmark]: Witness Printer took 4.07 ms. Allocated memory is still 61.9 MB. Free memory was 33.7 MB in the beginning and 33.1 MB in the end (delta: 570.0 kB). Peak memory consumption was 570.0 kB. Max. memory is 14.3 GB. [2020-10-20 06:08:01,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 32.5 MB. Free memory was 9.4 MB in the beginning and 9.4 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 626.84 ms. Allocated memory was 34.1 MB in the beginning and 44.0 MB in the end (delta: 10.0 MB). Free memory was 12.6 MB in the beginning and 20.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 80.56 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 17.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 964.74 ms. Allocated memory was 44.0 MB in the beginning and 48.8 MB in the end (delta: 4.7 MB). Free memory was 17.1 MB in the beginning and 24.4 MB in the end (delta: -7.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2859.88 ms. Allocated memory was 48.8 MB in the beginning and 61.9 MB in the end (delta: 13.1 MB). Free memory was 24.1 MB in the beginning and 33.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * Witness Printer took 4.07 ms. Allocated memory is still 61.9 MB. Free memory was 33.7 MB in the beginning and 33.1 MB in the end (delta: 570.0 kB). Peak memory consumption was 570.0 kB. Max. memory is 14.3 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}] [L534] COND FALSE !(a == 0) VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] [L555] EXPR a->h VAL [a={1:0}, a->h=3, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 110 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 368 SDslu, 90 SDs, 0 SdLazy, 214 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=1, 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, 2 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1332 SizeOfPredicates, 8 NumberOfNonLiveVariables, 128 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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...