./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.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 cf7af2f20e563d03f4a81a8dac054ded849cb34c .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.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 cf7af2f20e563d03f4a81a8dac054ded849cb34c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:01:21,065 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:01:21,067 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:01:21,084 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:01:21,084 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:01:21,085 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:01:21,087 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:01:21,090 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:01:21,093 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:01:21,098 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:01:21,099 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:01:21,100 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:01:21,101 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:01:21,101 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:01:21,103 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:01:21,106 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:01:21,107 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:01:21,108 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:01:21,115 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:01:21,121 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:01:21,122 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:01:21,123 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:01:21,126 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:01:21,126 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:01:21,126 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:01:21,127 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:01:21,128 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:01:21,129 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:01:21,130 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:01:21,131 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:01:21,131 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:01:21,133 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:01:21,133 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:01:21,133 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:01:21,134 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:01:21,135 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:01:21,135 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 23:01:21,150 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:01:21,151 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:01:21,151 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:01:21,152 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:01:21,152 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:01:21,152 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:01:21,153 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:01:21,153 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:01:21,154 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 23:01:21,154 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:01:21,154 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:01:21,154 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 23:01:21,154 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:01:21,154 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 23:01:21,155 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 23:01:21,155 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 23:01:21,155 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:01:21,155 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 23:01:21,155 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:01:21,155 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:01:21,157 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:01:21,157 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:01:21,157 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:01:21,158 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:01:21,158 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:01:21,158 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:01:21,158 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:01:21,158 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:01:21,158 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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 -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2018-11-28 23:01:21,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:01:21,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:01:21,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:01:21,226 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:01:21,227 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:01:21,228 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i [2018-11-28 23:01:21,306 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b8ef0aa/1f9a3c79739f4309ba391965f9e570ac/FLAG0ed7dcc5e [2018-11-28 23:01:21,796 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:01:21,797 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i [2018-11-28 23:01:21,813 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b8ef0aa/1f9a3c79739f4309ba391965f9e570ac/FLAG0ed7dcc5e [2018-11-28 23:01:22,093 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b8ef0aa/1f9a3c79739f4309ba391965f9e570ac [2018-11-28 23:01:22,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:01:22,099 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 23:01:22,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:01:22,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:01:22,105 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:01:22,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:01:22" (1/1) ... [2018-11-28 23:01:22,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eabef9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:22, skipping insertion in model container [2018-11-28 23:01:22,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:01:22" (1/1) ... [2018-11-28 23:01:22,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:01:22,159 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:01:22,524 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:01:22,536 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:01:22,595 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:01:22,735 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:01:22,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:22 WrapperNode [2018-11-28 23:01:22,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:01:22,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:01:22,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:01:22,737 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:01:22,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:22" (1/1) ... [2018-11-28 23:01:22,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:22" (1/1) ... [2018-11-28 23:01:22,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:22" (1/1) ... [2018-11-28 23:01:22,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:22" (1/1) ... [2018-11-28 23:01:22,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:22" (1/1) ... [2018-11-28 23:01:22,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:22" (1/1) ... [2018-11-28 23:01:22,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:22" (1/1) ... [2018-11-28 23:01:22,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:01:22,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:01:22,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:01:22,808 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:01:22,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:22" (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 [2018-11-28 23:01:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:01:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:01:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 23:01:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 23:01:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 23:01:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2018-11-28 23:01:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:01:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 23:01:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 23:01:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 23:01:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 23:01:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 23:01:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 23:01:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 23:01:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 23:01:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 23:01:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 23:01:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 23:01:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 23:01:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 23:01:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 23:01:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 23:01:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 23:01:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 23:01:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 23:01:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 23:01:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 23:01:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 23:01:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 23:01:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 23:01:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 23:01:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 23:01:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 23:01:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 23:01:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 23:01:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 23:01:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 23:01:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 23:01:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 23:01:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 23:01:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 23:01:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 23:01:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 23:01:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 23:01:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 23:01:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 23:01:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 23:01:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 23:01:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 23:01:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 23:01:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 23:01:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 23:01:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 23:01:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 23:01:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 23:01:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 23:01:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 23:01:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 23:01:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 23:01:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 23:01:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 23:01:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 23:01:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 23:01:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 23:01:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 23:01:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 23:01:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 23:01:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-28 23:01:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 23:01:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 23:01:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-28 23:01:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 23:01:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 23:01:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-28 23:01:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 23:01:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 23:01:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 23:01:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 23:01:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 23:01:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 23:01:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 23:01:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 23:01:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 23:01:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 23:01:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 23:01:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 23:01:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 23:01:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 23:01:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 23:01:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 23:01:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 23:01:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 23:01:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 23:01:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 23:01:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 23:01:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 23:01:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 23:01:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 23:01:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 23:01:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 23:01:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 23:01:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 23:01:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 23:01:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 23:01:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 23:01:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 23:01:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 23:01:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 23:01:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 23:01:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 23:01:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 23:01:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 23:01:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 23:01:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2018-11-28 23:01:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 23:01:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:01:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 23:01:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 23:01:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 23:01:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:01:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:01:23,577 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:01:23,577 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 23:01:23,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:01:23 BoogieIcfgContainer [2018-11-28 23:01:23,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:01:23,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:01:23,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:01:23,583 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:01:23,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:01:22" (1/3) ... [2018-11-28 23:01:23,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1443ff07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:01:23, skipping insertion in model container [2018-11-28 23:01:23,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:22" (2/3) ... [2018-11-28 23:01:23,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1443ff07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:01:23, skipping insertion in model container [2018-11-28 23:01:23,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:01:23" (3/3) ... [2018-11-28 23:01:23,588 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy_false-valid-memtrack.i [2018-11-28 23:01:23,598 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:01:23,608 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-11-28 23:01:23,627 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-11-28 23:01:23,655 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:01:23,656 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:01:23,656 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 23:01:23,657 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:01:23,657 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:01:23,657 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:01:23,658 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:01:23,658 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:01:23,658 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:01:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-11-28 23:01:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 23:01:23,688 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:01:23,689 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:01:23,692 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 23:01:23,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:01:23,698 INFO L82 PathProgramCache]: Analyzing trace with hash -452904455, now seen corresponding path program 1 times [2018-11-28 23:01:23,700 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:01:23,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:01:23,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:01:23,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:23,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:01:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:01:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:01:24,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:01:24,204 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:01:24,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:01:24,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:01:24,310 INFO L478 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 [2018-11-28 23:01:24,312 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:24,333 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:24,333 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-28 23:01:24,404 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 23:01:24,406 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 23:01:24,408 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-11-28 23:01:24,409 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:24,431 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 23:01:24,432 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2018-11-28 23:01:24,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:01:24,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:01:24,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2018-11-28 23:01:24,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 23:01:24,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 23:01:24,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:01:24,569 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 10 states. [2018-11-28 23:01:25,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:01:25,879 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-11-28 23:01:25,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 23:01:25,881 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-11-28 23:01:25,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:01:25,894 INFO L225 Difference]: With dead ends: 35 [2018-11-28 23:01:25,894 INFO L226 Difference]: Without dead ends: 29 [2018-11-28 23:01:25,898 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-11-28 23:01:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-28 23:01:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-28 23:01:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-28 23:01:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-28 23:01:25,940 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2018-11-28 23:01:25,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:01:25,942 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-28 23:01:25,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 23:01:25,942 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-28 23:01:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 23:01:25,943 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:01:25,943 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:01:25,944 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 23:01:25,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:01:25,944 INFO L82 PathProgramCache]: Analyzing trace with hash -452904454, now seen corresponding path program 1 times [2018-11-28 23:01:25,944 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:01:25,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:01:25,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:01:25,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:25,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:01:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:01:26,353 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 23:01:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:01:26,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:01:26,396 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:01:26,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:01:26,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:01:26,448 INFO L478 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 [2018-11-28 23:01:26,448 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:26,488 INFO L478 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 [2018-11-28 23:01:26,489 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:26,502 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:26,502 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-11-28 23:01:26,575 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 23:01:26,577 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 23:01:26,578 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-28 23:01:26,579 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:26,655 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-11-28 23:01:26,656 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:26,668 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 23:01:26,668 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2018-11-28 23:01:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:01:26,743 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:01:26,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-11-28 23:01:26,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 23:01:26,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 23:01:26,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-11-28 23:01:26,745 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 11 states. [2018-11-28 23:01:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:01:27,735 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-28 23:01:27,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 23:01:27,736 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-11-28 23:01:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:01:27,739 INFO L225 Difference]: With dead ends: 25 [2018-11-28 23:01:27,739 INFO L226 Difference]: Without dead ends: 25 [2018-11-28 23:01:27,741 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-11-28 23:01:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-28 23:01:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-28 23:01:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 23:01:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-11-28 23:01:27,747 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 19 [2018-11-28 23:01:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:01:27,747 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-11-28 23:01:27,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 23:01:27,748 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-28 23:01:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 23:01:27,749 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:01:27,749 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:01:27,750 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 23:01:27,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:01:27,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1984347099, now seen corresponding path program 1 times [2018-11-28 23:01:27,750 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:01:27,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:01:27,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:01:27,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:27,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:01:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:01:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:01:27,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:01:27,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 23:01:27,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 23:01:27,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:01:27,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:01:27,856 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 7 states. [2018-11-28 23:01:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:01:27,961 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-28 23:01:27,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:01:27,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-11-28 23:01:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:01:27,970 INFO L225 Difference]: With dead ends: 24 [2018-11-28 23:01:27,970 INFO L226 Difference]: Without dead ends: 24 [2018-11-28 23:01:27,970 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:01:27,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-28 23:01:27,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-28 23:01:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 23:01:27,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-28 23:01:27,975 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-11-28 23:01:27,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:01:27,975 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-28 23:01:27,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 23:01:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-28 23:01:27,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 23:01:27,976 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:01:27,977 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:01:27,977 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 23:01:27,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:01:27,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1984347098, now seen corresponding path program 1 times [2018-11-28 23:01:27,978 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:01:27,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:01:27,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:01:27,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:27,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:01:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:01:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:01:28,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:01:28,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 23:01:28,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 23:01:28,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:01:28,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:01:28,147 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2018-11-28 23:01:28,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:01:28,266 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-28 23:01:28,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:01:28,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-11-28 23:01:28,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:01:28,269 INFO L225 Difference]: With dead ends: 23 [2018-11-28 23:01:28,269 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 23:01:28,270 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:01:28,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 23:01:28,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-28 23:01:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 23:01:28,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-28 23:01:28,274 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 22 [2018-11-28 23:01:28,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:01:28,274 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-28 23:01:28,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 23:01:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-28 23:01:28,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 23:01:28,275 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:01:28,276 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:01:28,276 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 23:01:28,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:01:28,276 INFO L82 PathProgramCache]: Analyzing trace with hash -357360832, now seen corresponding path program 1 times [2018-11-28 23:01:28,276 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:01:28,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:01:28,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:01:28,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:28,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:01:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:01:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:01:28,352 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 23:01:28,366 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 23:01:28,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:01:28 BoogieIcfgContainer [2018-11-28 23:01:28,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:01:28,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:01:28,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:01:28,379 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:01:28,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:01:23" (3/4) ... [2018-11-28 23:01:28,383 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:01:28,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:01:28,384 INFO L168 Benchmark]: Toolchain (without parser) took 6286.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 952.7 MB in the beginning and 876.3 MB in the end (delta: 76.4 MB). Peak memory consumption was 220.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:01:28,385 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:01:28,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:01:28,387 INFO L168 Benchmark]: Boogie Preprocessor took 68.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:01:28,387 INFO L168 Benchmark]: RCFGBuilder took 773.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:01:28,388 INFO L168 Benchmark]: TraceAbstraction took 4799.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 876.3 MB in the end (delta: 207.8 MB). Peak memory consumption was 207.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:01:28,389 INFO L168 Benchmark]: Witness Printer took 4.45 ms. Allocated memory is still 1.2 GB. Free memory is still 876.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:01:28,393 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 635.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 773.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4799.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 876.3 MB in the end (delta: 207.8 MB). Peak memory consumption was 207.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.45 ms. Allocated memory is still 1.2 GB. Free memory is still 876.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={10:0}, temp={10:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={10:0}, temp={10:0}] [L566] return temp; VAL [\result={10:0}, malloc(sizeof(struct node))={10:0}, temp={10:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={10:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={7:0}, temp={7:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={7:0}, temp={7:0}] [L566] return temp; VAL [\result={7:0}, malloc(sizeof(struct node))={7:0}, temp={7:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={7:0}, s={10:0}] [L570] s->next = alloc_node() VAL [alloc_node()={7:0}, s={10:0}] [L571] EXPR s->next VAL [s={10:0}, s->next={7:0}] [L571] *s = *(s->next) VAL [*s = *(s->next)={8:5}, s={10:0}, s->next={7:0}] [L572] free(s) VAL [s={10:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 11 error locations. UNSAFE Result, 4.7s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 55 SDslu, 199 SDs, 0 SdLazy, 409 SolverSat, 28 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 10 QuantifiedInterpolants, 14544 SizeOfPredicates, 8 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 14/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.24-91b1670 [2018-11-28 23:01:30,775 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:01:30,777 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:01:30,789 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:01:30,790 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:01:30,791 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:01:30,792 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:01:30,795 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:01:30,796 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:01:30,797 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:01:30,799 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:01:30,799 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:01:30,800 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:01:30,801 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:01:30,803 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:01:30,804 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:01:30,805 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:01:30,807 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:01:30,810 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:01:30,812 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:01:30,813 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:01:30,814 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:01:30,817 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:01:30,818 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:01:30,818 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:01:30,819 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:01:30,820 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:01:30,822 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:01:30,823 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:01:30,824 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:01:30,824 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:01:30,825 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:01:30,825 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:01:30,826 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:01:30,827 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:01:30,828 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:01:30,829 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-11-28 23:01:30,844 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:01:30,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:01:30,845 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:01:30,846 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:01:30,847 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:01:30,847 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:01:30,847 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:01:30,847 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:01:30,848 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 23:01:30,848 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:01:30,848 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:01:30,849 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 23:01:30,849 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:01:30,849 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 23:01:30,849 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 23:01:30,849 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 23:01:30,849 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:01:30,850 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 23:01:30,850 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 23:01:30,850 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 23:01:30,850 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:01:30,850 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:01:30,852 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:01:30,852 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:01:30,852 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:01:30,852 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:01:30,852 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:01:30,854 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:01:30,854 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 23:01:30,854 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:01:30,854 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 23:01:30,854 INFO L133 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 -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2018-11-28 23:01:30,891 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:01:30,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:01:30,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:01:30,910 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:01:30,911 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:01:30,912 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i [2018-11-28 23:01:30,976 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd9dda24/28d99d92e52949e095682221c00533ef/FLAG5b1838def [2018-11-28 23:01:31,535 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:01:31,537 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i [2018-11-28 23:01:31,558 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd9dda24/28d99d92e52949e095682221c00533ef/FLAG5b1838def [2018-11-28 23:01:31,800 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd9dda24/28d99d92e52949e095682221c00533ef [2018-11-28 23:01:31,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:01:31,805 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 23:01:31,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:01:31,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:01:31,813 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:01:31,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:01:31" (1/1) ... [2018-11-28 23:01:31,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a77845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:31, skipping insertion in model container [2018-11-28 23:01:31,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:01:31" (1/1) ... [2018-11-28 23:01:31,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:01:31,884 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:01:32,211 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:01:32,235 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:01:32,287 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:01:32,442 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:01:32,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:32 WrapperNode [2018-11-28 23:01:32,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:01:32,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:01:32,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:01:32,444 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:01:32,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:32" (1/1) ... [2018-11-28 23:01:32,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:32" (1/1) ... [2018-11-28 23:01:32,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:32" (1/1) ... [2018-11-28 23:01:32,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:32" (1/1) ... [2018-11-28 23:01:32,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:32" (1/1) ... [2018-11-28 23:01:32,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:32" (1/1) ... [2018-11-28 23:01:32,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:32" (1/1) ... [2018-11-28 23:01:32,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:01:32,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:01:32,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:01:32,517 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:01:32,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:01:32,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:01:32,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:01:32,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 23:01:32,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 23:01:32,588 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 23:01:32,588 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2018-11-28 23:01:32,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:01:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 23:01:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 23:01:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 23:01:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 23:01:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 23:01:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 23:01:32,590 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 23:01:32,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 23:01:32,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 23:01:32,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 23:01:32,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 23:01:32,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 23:01:32,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 23:01:32,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 23:01:32,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 23:01:32,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 23:01:32,591 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 23:01:32,591 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 23:01:32,592 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 23:01:32,592 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 23:01:32,592 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 23:01:32,592 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 23:01:32,592 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 23:01:32,592 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 23:01:32,593 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 23:01:32,593 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 23:01:32,593 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 23:01:32,593 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 23:01:32,593 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 23:01:32,594 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 23:01:32,594 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 23:01:32,594 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 23:01:32,594 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 23:01:32,594 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 23:01:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 23:01:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 23:01:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 23:01:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 23:01:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 23:01:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 23:01:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 23:01:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 23:01:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 23:01:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 23:01:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 23:01:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 23:01:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 23:01:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 23:01:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 23:01:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 23:01:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 23:01:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 23:01:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 23:01:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 23:01:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 23:01:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 23:01:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 23:01:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 23:01:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 23:01:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 23:01:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-28 23:01:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 23:01:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 23:01:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-28 23:01:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 23:01:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 23:01:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-28 23:01:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 23:01:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 23:01:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 23:01:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 23:01:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 23:01:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 23:01:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 23:01:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 23:01:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 23:01:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 23:01:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 23:01:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 23:01:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 23:01:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 23:01:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 23:01:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 23:01:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 23:01:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 23:01:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 23:01:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 23:01:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 23:01:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 23:01:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 23:01:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 23:01:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 23:01:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 23:01:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 23:01:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 23:01:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 23:01:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 23:01:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 23:01:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 23:01:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 23:01:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 23:01:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 23:01:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 23:01:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 23:01:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 23:01:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 23:01:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2018-11-28 23:01:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 23:01:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:01:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 23:01:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 23:01:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 23:01:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:01:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:01:33,348 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:01:33,349 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 23:01:33,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:01:33 BoogieIcfgContainer [2018-11-28 23:01:33,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:01:33,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:01:33,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:01:33,354 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:01:33,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:01:31" (1/3) ... [2018-11-28 23:01:33,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f07c719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:01:33, skipping insertion in model container [2018-11-28 23:01:33,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:01:32" (2/3) ... [2018-11-28 23:01:33,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f07c719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:01:33, skipping insertion in model container [2018-11-28 23:01:33,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:01:33" (3/3) ... [2018-11-28 23:01:33,357 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy_false-valid-memtrack.i [2018-11-28 23:01:33,368 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:01:33,376 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-11-28 23:01:33,395 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-11-28 23:01:33,424 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:01:33,425 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:01:33,425 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 23:01:33,425 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:01:33,425 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:01:33,425 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:01:33,426 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:01:33,426 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:01:33,426 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:01:33,443 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-11-28 23:01:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 23:01:33,457 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:01:33,458 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:01:33,460 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 23:01:33,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:01:33,468 INFO L82 PathProgramCache]: Analyzing trace with hash -452904455, now seen corresponding path program 1 times [2018-11-28 23:01:33,473 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 23:01:33,474 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 23:01:33,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:01:33,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:01:33,635 INFO L478 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 [2018-11-28 23:01:33,638 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:33,674 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:33,675 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-28 23:01:34,364 WARN L854 $PredicateComparison]: unable to prove that (exists ((|alloc_node_#t~malloc2.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |alloc_node_#t~malloc2.base| (_ bv1 1)))) is different from true [2018-11-28 23:01:34,390 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 14 treesize of output 11 [2018-11-28 23:01:34,391 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:34,438 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 23:01:34,438 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2018-11-28 23:01:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2018-11-28 23:01:34,470 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 23:01:34,919 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 23:01:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4 --incremental --print-success --lang smt --rewrite-divk (2)] Exception during sending of exit command (exit): Broken pipe [2018-11-28 23:01:35,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:01:35,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2018-11-28 23:01:35,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 23:01:35,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 23:01:35,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=38, Unknown=6, NotChecked=12, Total=72 [2018-11-28 23:01:35,059 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 9 states. [2018-11-28 23:01:36,731 WARN L180 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 22 DAG size of output: 13 [2018-11-28 23:01:38,871 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2018-11-28 23:01:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:01:47,245 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-11-28 23:01:47,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 23:01:47,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-11-28 23:01:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:01:47,255 INFO L225 Difference]: With dead ends: 35 [2018-11-28 23:01:47,256 INFO L226 Difference]: Without dead ends: 29 [2018-11-28 23:01:47,258 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=40, Invalid=108, Unknown=12, NotChecked=22, Total=182 [2018-11-28 23:01:47,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-28 23:01:47,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-28 23:01:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-28 23:01:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-28 23:01:47,302 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2018-11-28 23:01:47,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:01:47,304 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-28 23:01:47,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 23:01:47,304 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-28 23:01:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 23:01:47,306 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:01:47,306 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:01:47,306 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 23:01:47,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:01:47,307 INFO L82 PathProgramCache]: Analyzing trace with hash -452904454, now seen corresponding path program 1 times [2018-11-28 23:01:47,307 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 23:01:47,307 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 23:01:47,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:01:47,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:01:47,409 INFO L478 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 [2018-11-28 23:01:47,410 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:47,428 INFO L478 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 [2018-11-28 23:01:47,429 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:47,435 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:47,436 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-11-28 23:01:49,021 WARN L854 $PredicateComparison]: unable to prove that (exists ((|alloc_node_#t~malloc2.base| (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| |alloc_node_#t~malloc2.base| (_ bv4 32))) (= (select |c_old(#valid)| |alloc_node_#t~malloc2.base|) (_ bv0 1)))) is different from true [2018-11-28 23:01:49,061 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 23:01:49,066 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 23:01:49,068 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-28 23:01:49,068 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:49,088 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-11-28 23:01:49,089 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:49,104 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 23:01:49,104 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2018-11-28 23:01:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2018-11-28 23:01:49,147 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 23:01:49,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:01:49,499 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:01:49,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:01:49,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:01:49,583 INFO L478 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 [2018-11-28 23:01:49,584 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:49,607 INFO L478 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 [2018-11-28 23:01:49,607 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:49,628 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:49,629 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-11-28 23:01:49,673 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 23:01:49,675 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 23:01:49,677 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-11-28 23:01:49,677 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:49,696 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-11-28 23:01:49,697 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:49,752 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 23:01:49,752 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:18 [2018-11-28 23:01:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2018-11-28 23:01:49,756 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 23:01:49,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:01:49,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 23:01:49,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 23:01:49,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 23:01:49,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2018-11-28 23:01:49,895 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 9 states. [2018-11-28 23:01:50,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:01:50,449 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-28 23:01:50,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:01:50,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-11-28 23:01:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:01:50,455 INFO L225 Difference]: With dead ends: 25 [2018-11-28 23:01:50,455 INFO L226 Difference]: Without dead ends: 25 [2018-11-28 23:01:50,456 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=37, Invalid=122, Unknown=1, NotChecked=22, Total=182 [2018-11-28 23:01:50,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-28 23:01:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-28 23:01:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 23:01:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-11-28 23:01:50,461 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 19 [2018-11-28 23:01:50,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:01:50,461 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-11-28 23:01:50,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 23:01:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-28 23:01:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 23:01:50,463 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:01:50,463 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:01:50,463 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 23:01:50,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:01:50,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1984347099, now seen corresponding path program 1 times [2018-11-28 23:01:50,464 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 23:01:50,464 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 23:01:50,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:01:50,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:01:50,539 INFO L478 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 [2018-11-28 23:01:50,539 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:50,544 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:50,545 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-28 23:01:50,590 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-28 23:01:50,598 INFO L478 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 8 treesize of output 7 [2018-11-28 23:01:50,599 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:50,603 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:50,611 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:50,612 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:11 [2018-11-28 23:01:50,644 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-11-28 23:01:50,652 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2018-11-28 23:01:50,653 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:50,658 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:50,666 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 23:01:50,667 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:13 [2018-11-28 23:01:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:01:50,728 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 23:01:50,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:01:50,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 23:01:50,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 23:01:50,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:01:50,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:01:50,732 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 7 states. [2018-11-28 23:01:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:01:50,909 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-28 23:01:50,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:01:50,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-11-28 23:01:50,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:01:50,912 INFO L225 Difference]: With dead ends: 24 [2018-11-28 23:01:50,912 INFO L226 Difference]: Without dead ends: 24 [2018-11-28 23:01:50,913 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:01:50,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-28 23:01:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-28 23:01:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 23:01:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-28 23:01:50,917 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-11-28 23:01:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:01:50,917 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-28 23:01:50,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 23:01:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-28 23:01:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 23:01:50,918 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:01:50,918 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:01:50,919 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 23:01:50,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:01:50,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1984347098, now seen corresponding path program 1 times [2018-11-28 23:01:50,919 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 23:01:50,920 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 23:01:50,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:01:50,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:01:51,004 INFO L478 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 [2018-11-28 23:01:51,004 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,015 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,016 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 23:01:51,074 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-28 23:01:51,083 INFO L478 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 8 treesize of output 7 [2018-11-28 23:01:51,083 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,087 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,107 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-28 23:01:51,112 INFO L478 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 8 treesize of output 7 [2018-11-28 23:01:51,112 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,115 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,129 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,129 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2018-11-28 23:01:51,176 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-28 23:01:51,179 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-28 23:01:51,180 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,186 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,199 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-28 23:01:51,204 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2018-11-28 23:01:51,204 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,207 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,214 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 23:01:51,215 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:31, output treesize:9 [2018-11-28 23:01:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:01:51,239 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 23:01:51,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:01:51,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 23:01:51,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 23:01:51,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:01:51,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:01:51,243 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2018-11-28 23:01:51,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:01:51,426 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-28 23:01:51,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:01:51,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-11-28 23:01:51,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:01:51,429 INFO L225 Difference]: With dead ends: 23 [2018-11-28 23:01:51,429 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 23:01:51,430 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:01:51,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 23:01:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-28 23:01:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 23:01:51,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-28 23:01:51,433 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 22 [2018-11-28 23:01:51,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:01:51,434 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-28 23:01:51,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 23:01:51,434 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-28 23:01:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 23:01:51,435 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:01:51,435 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:01:51,436 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION]=== [2018-11-28 23:01:51,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:01:51,436 INFO L82 PathProgramCache]: Analyzing trace with hash -357360832, now seen corresponding path program 1 times [2018-11-28 23:01:51,436 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 23:01:51,437 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 23:01:51,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:01:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:01:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:01:51,637 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 23:01:51,663 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 23:01:51,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:01:51 BoogieIcfgContainer [2018-11-28 23:01:51,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:01:51,703 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:01:51,703 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:01:51,703 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:01:51,704 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:01:33" (3/4) ... [2018-11-28 23:01:51,716 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:01:51,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:01:51,717 INFO L168 Benchmark]: Toolchain (without parser) took 19912.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 954.0 MB in the beginning and 796.5 MB in the end (delta: 157.5 MB). Peak memory consumption was 287.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:01:51,719 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:01:51,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 954.0 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. [2018-11-28 23:01:51,720 INFO L168 Benchmark]: Boogie Preprocessor took 72.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:01:51,721 INFO L168 Benchmark]: RCFGBuilder took 832.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:01:51,723 INFO L168 Benchmark]: TraceAbstraction took 18349.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 796.5 MB in the end (delta: 270.4 MB). Peak memory consumption was 270.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:01:51,723 INFO L168 Benchmark]: Witness Printer took 13.25 ms. Allocated memory is still 1.2 GB. Free memory is still 796.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:01:51,729 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 636.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 954.0 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 832.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18349.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 796.5 MB in the end (delta: 270.4 MB). Peak memory consumption was 270.4 MB. Max. memory is 11.5 GB. * Witness Printer took 13.25 ms. Allocated memory is still 1.2 GB. Free memory is still 796.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={2147483647:0}, temp={2147483647:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={2147483647:0}, temp={2147483647:0}] [L566] return temp; VAL [\result={2147483647:0}, malloc(sizeof(struct node))={2147483647:0}, temp={2147483647:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={2147483647:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L566] return temp; VAL [\result={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={-2147483648:0}, s={2147483647:0}] [L570] s->next = alloc_node() VAL [alloc_node()={-2147483648:0}, s={2147483647:0}] [L571] EXPR s->next VAL [s={2147483647:0}, s->next={-2147483648:0}] [L571] *s = *(s->next) VAL [*s = *(s->next)={0:0}, s={2147483647:0}, s->next={-2147483648:0}] [L572] free(s) VAL [s={2147483647:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={2147483647:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 11 error locations. UNSAFE Result, 18.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 13.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 68 SDslu, 189 SDs, 0 SdLazy, 319 SolverSat, 26 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 114 ConstructedInterpolants, 19 QuantifiedInterpolants, 14400 SizeOfPredicates, 30 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 14/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...