./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/list-properties/list_flag_true-unreach-call_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-properties/list_flag_true-unreach-call_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 22b342a177abe6e71ce9cf9da662ebff6e69063a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-properties/list_flag_true-unreach-call_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 22b342a177abe6e71ce9cf9da662ebff6e69063a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:54:24,565 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:54:24,567 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:54:24,581 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:54:24,581 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:54:24,582 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:54:24,584 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:54:24,587 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:54:24,589 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:54:24,593 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:54:24,594 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:54:24,597 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:54:24,598 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:54:24,601 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:54:24,605 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:54:24,606 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:54:24,609 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:54:24,613 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:54:24,617 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:54:24,622 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:54:24,627 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:54:24,628 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:54:24,634 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:54:24,637 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:54:24,637 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:54:24,638 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:54:24,639 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:54:24,643 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:54:24,646 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:54:24,651 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:54:24,651 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:54:24,652 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:54:24,654 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:54:24,654 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:54:24,655 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:54:24,656 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:54:24,656 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 22:54:24,689 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:54:24,691 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:54:24,692 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:54:24,692 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:54:24,693 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:54:24,694 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:54:24,694 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:54:24,695 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:54:24,695 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:54:24,695 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:54:24,695 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:54:24,695 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:54:24,697 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:54:24,697 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:54:24,697 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:54:24,698 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:54:24,698 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:54:24,698 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:54:24,698 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:54:24,699 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:54:24,700 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:54:24,700 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:54:24,700 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:54:24,700 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:54:24,700 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:54:24,703 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:54:24,704 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 22:54:24,704 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:54:24,704 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 -> 22b342a177abe6e71ce9cf9da662ebff6e69063a [2018-11-28 22:54:24,765 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:54:24,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:54:24,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:54:24,789 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:54:24,790 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:54:24,791 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:24,861 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ecc4eaa/652eb683f3844c5a85b392930b12a4bf/FLAG1d85e38a4 [2018-11-28 22:54:25,387 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:54:25,388 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:25,407 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ecc4eaa/652eb683f3844c5a85b392930b12a4bf/FLAG1d85e38a4 [2018-11-28 22:54:25,691 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ecc4eaa/652eb683f3844c5a85b392930b12a4bf [2018-11-28 22:54:25,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:54:25,696 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:54:25,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:25,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:54:25,701 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:54:25,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:25" (1/1) ... [2018-11-28 22:54:25,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bca8a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:25, skipping insertion in model container [2018-11-28 22:54:25,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:25" (1/1) ... [2018-11-28 22:54:25,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:54:25,770 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:54:26,159 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:26,171 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:54:26,219 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:26,371 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:54:26,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:26 WrapperNode [2018-11-28 22:54:26,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:26,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:54:26,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:54:26,374 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:54:26,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:26" (1/1) ... [2018-11-28 22:54:26,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:26" (1/1) ... [2018-11-28 22:54:26,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:26" (1/1) ... [2018-11-28 22:54:26,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:26" (1/1) ... [2018-11-28 22:54:26,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:26" (1/1) ... [2018-11-28 22:54:26,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:26" (1/1) ... [2018-11-28 22:54:26,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:26" (1/1) ... [2018-11-28 22:54:26,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:54:26,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:54:26,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:54:26,465 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:54:26,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:26" (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 22:54:26,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:54:26,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:54:26,540 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 22:54:26,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:54:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 22:54:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:54:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:54:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:54:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:54:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:54:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:54:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:54:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:54:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:54:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:54:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:54:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:54:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:54:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:54:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:54:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:54:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:54:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:54:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:54:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:54:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:54:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:54:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:54:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:54:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:54:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:54:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:54:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:54:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:54:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:54:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:54:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:54:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:54:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:54:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:54:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:54:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:54:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:54:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:54:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:54:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:54:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:54:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:54:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:54:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:54:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:54:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:54:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:54:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:54:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:54:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:54:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:54:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:54:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:54:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:54:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:54:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:54:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:54:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:54:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:54:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:54:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:54:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:54:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:54:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:54:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 22:54:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:54:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:54:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:54:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:54:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:54:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:54:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:54:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:54:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:54:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:54:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:54:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:54:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:54:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:54:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:54:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:54:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:54:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:54:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:54:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:54:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:54:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:54:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:54:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:54:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:54:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:54:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:54:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:54:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:54:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:54:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:54:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:54:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:54:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:54:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:54:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:54:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 22:54:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:54:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:54:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 22:54:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 22:54:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 22:54:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 22:54:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:54:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:54:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:54:27,367 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:54:27,368 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-28 22:54:27,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:27 BoogieIcfgContainer [2018-11-28 22:54:27,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:54:27,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:54:27,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:54:27,373 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:54:27,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:54:25" (1/3) ... [2018-11-28 22:54:27,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487ee928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:27, skipping insertion in model container [2018-11-28 22:54:27,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:26" (2/3) ... [2018-11-28 22:54:27,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487ee928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:27, skipping insertion in model container [2018-11-28 22:54:27,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:27" (3/3) ... [2018-11-28 22:54:27,376 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:27,387 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:54:27,397 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-11-28 22:54:27,415 INFO L257 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2018-11-28 22:54:27,443 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:54:27,444 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:54:27,444 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:54:27,444 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:54:27,446 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:54:27,446 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:54:27,446 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:54:27,446 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:54:27,446 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:54:27,474 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-11-28 22:54:27,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:27,488 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:27,489 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:27,491 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr6REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION]=== [2018-11-28 22:54:27,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:27,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1106867600, now seen corresponding path program 1 times [2018-11-28 22:54:27,499 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:27,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:27,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:27,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:27,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:27,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:27,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:54:27,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 22:54:27,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 22:54:27,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 22:54:27,679 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2018-11-28 22:54:27,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:27,701 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2018-11-28 22:54:27,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 22:54:27,702 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 22:54:27,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:27,710 INFO L225 Difference]: With dead ends: 61 [2018-11-28 22:54:27,710 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 22:54:27,712 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 22:54:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 22:54:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-11-28 22:54:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-28 22:54:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2018-11-28 22:54:27,753 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 10 [2018-11-28 22:54:27,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:27,754 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2018-11-28 22:54:27,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 22:54:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2018-11-28 22:54:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 22:54:27,754 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:27,755 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:27,755 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr6REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION]=== [2018-11-28 22:54:27,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:27,755 INFO L82 PathProgramCache]: Analyzing trace with hash 46809097, now seen corresponding path program 1 times [2018-11-28 22:54:27,755 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:27,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:27,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:27,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:27,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:27,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:27,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:27,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:27,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:27,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:27,896 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 4 states. [2018-11-28 22:54:28,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:28,359 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2018-11-28 22:54:28,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:28,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 22:54:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:28,363 INFO L225 Difference]: With dead ends: 61 [2018-11-28 22:54:28,364 INFO L226 Difference]: Without dead ends: 61 [2018-11-28 22:54:28,365 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-28 22:54:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2018-11-28 22:54:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-28 22:54:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2018-11-28 22:54:28,373 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 11 [2018-11-28 22:54:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:28,373 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2018-11-28 22:54:28,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2018-11-28 22:54:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 22:54:28,374 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:28,374 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:28,375 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr6REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION]=== [2018-11-28 22:54:28,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:28,375 INFO L82 PathProgramCache]: Analyzing trace with hash 46809098, now seen corresponding path program 1 times [2018-11-28 22:54:28,375 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:28,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:28,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:28,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:28,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:28,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:28,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:28,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:28,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:28,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:28,459 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 4 states. [2018-11-28 22:54:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:29,138 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2018-11-28 22:54:29,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:29,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 22:54:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:29,140 INFO L225 Difference]: With dead ends: 72 [2018-11-28 22:54:29,140 INFO L226 Difference]: Without dead ends: 72 [2018-11-28 22:54:29,140 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-28 22:54:29,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2018-11-28 22:54:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-28 22:54:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2018-11-28 22:54:29,148 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 11 [2018-11-28 22:54:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:29,149 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2018-11-28 22:54:29,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:29,149 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2018-11-28 22:54:29,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 22:54:29,150 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:29,150 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:29,150 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr6REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION]=== [2018-11-28 22:54:29,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:29,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1944909317, now seen corresponding path program 1 times [2018-11-28 22:54:29,151 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:29,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:29,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:29,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:29,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:29,222 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 22:54:29,237 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 22:54:29,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:54:29 BoogieIcfgContainer [2018-11-28 22:54:29,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:54:29,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:54:29,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:54:29,256 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:54:29,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:27" (3/4) ... [2018-11-28 22:54:29,261 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 22:54:29,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:54:29,262 INFO L168 Benchmark]: Toolchain (without parser) took 3567.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 954.0 MB in the beginning and 989.8 MB in the end (delta: -35.8 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:29,264 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 22:54:29,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 954.0 MB in the beginning and 1.1 GB in the end (delta: -147.5 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:29,266 INFO L168 Benchmark]: Boogie Preprocessor took 91.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:29,267 INFO L168 Benchmark]: RCFGBuilder took 903.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:29,268 INFO L168 Benchmark]: TraceAbstraction took 1886.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 989.8 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:29,269 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 1.1 GB. Free memory is still 989.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:29,273 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 675.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 954.0 MB in the beginning and 1.1 GB in the end (delta: -147.5 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 91.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 903.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1886.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 989.8 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.25 ms. Allocated memory is still 1.1 GB. Free memory is still 989.8 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: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] a = (List) malloc(sizeof(struct node)) VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}] [L630] COND FALSE !(a == 0) VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}] [L631] p = a VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}] [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] p->h = 3 VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}] [L644] p = a VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}] [L645] COND FALSE !(\read(flag)) VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}] [L649] EXPR p->h VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR p->h VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}, p->h=3] [L651] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 21 error locations. UNSAFE Result, 1.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 181 SDslu, 35 SDs, 0 SdLazy, 102 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=3, 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, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 22:54:31,621 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:54:31,623 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:54:31,635 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:54:31,636 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:54:31,637 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:54:31,638 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:54:31,640 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:54:31,642 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:54:31,643 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:54:31,645 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:54:31,645 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:54:31,646 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:54:31,647 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:54:31,648 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:54:31,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:54:31,651 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:54:31,653 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:54:31,655 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:54:31,657 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:54:31,658 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:54:31,659 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:54:31,662 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:54:31,662 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:54:31,662 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:54:31,663 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:54:31,665 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:54:31,666 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:54:31,666 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:54:31,668 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:54:31,668 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:54:31,669 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:54:31,669 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:54:31,669 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:54:31,671 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:54:31,672 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:54:31,672 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-11-28 22:54:31,687 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:54:31,688 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:54:31,688 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:54:31,689 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:54:31,690 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:54:31,690 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:54:31,690 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:54:31,690 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:54:31,690 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:54:31,691 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:54:31,691 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:54:31,691 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:54:31,691 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:54:31,691 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:54:31,691 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:54:31,693 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:54:31,693 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:54:31,693 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 22:54:31,693 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 22:54:31,694 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:54:31,694 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:54:31,695 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:54:31,695 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:54:31,695 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:54:31,695 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:54:31,695 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:54:31,695 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:54:31,696 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:54:31,697 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 22:54:31,697 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:54:31,697 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 22:54:31,697 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 -> 22b342a177abe6e71ce9cf9da662ebff6e69063a [2018-11-28 22:54:31,733 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:54:31,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:54:31,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:54:31,752 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:54:31,752 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:54:31,753 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:31,813 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56723a3d/4e1a3eb763664848a9b99ea830169d95/FLAG0dce3fa6c [2018-11-28 22:54:32,343 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:54:32,343 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:32,364 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56723a3d/4e1a3eb763664848a9b99ea830169d95/FLAG0dce3fa6c [2018-11-28 22:54:32,623 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56723a3d/4e1a3eb763664848a9b99ea830169d95 [2018-11-28 22:54:32,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:54:32,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:54:32,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:32,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:54:32,633 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:54:32,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:32" (1/1) ... [2018-11-28 22:54:32,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fe42a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:32, skipping insertion in model container [2018-11-28 22:54:32,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:32" (1/1) ... [2018-11-28 22:54:32,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:54:32,691 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:54:33,048 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:33,063 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:54:33,112 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:33,189 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:54:33,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:33 WrapperNode [2018-11-28 22:54:33,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:33,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:54:33,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:54:33,192 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:54:33,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:33" (1/1) ... [2018-11-28 22:54:33,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:33" (1/1) ... [2018-11-28 22:54:33,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:33" (1/1) ... [2018-11-28 22:54:33,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:33" (1/1) ... [2018-11-28 22:54:33,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:33" (1/1) ... [2018-11-28 22:54:33,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:33" (1/1) ... [2018-11-28 22:54:33,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:33" (1/1) ... [2018-11-28 22:54:33,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:54:33,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:54:33,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:54:33,337 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:54:33,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:33" (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 22:54:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:54:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:54:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 22:54:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:54:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 22:54:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:54:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:54:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:54:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:54:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:54:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:54:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:54:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:54:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:54:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:54:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:54:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:54:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:54:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:54:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:54:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:54:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:54:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:54:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:54:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:54:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:54:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:54:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:54:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:54:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:54:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:54:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:54:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:54:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:54:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:54:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:54:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:54:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:54:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:54:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:54:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:54:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:54:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:54:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:54:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:54:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:54:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:54:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:54:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:54:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:54:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:54:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:54:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:54:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:54:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:54:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:54:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:54:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:54:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:54:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:54:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:54:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:54:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:54:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:54:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:54:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:54:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:54:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:54:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:54:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:54:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 22:54:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:54:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:54:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:54:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:54:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:54:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:54:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:54:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:54:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:54:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:54:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:54:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:54:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:54:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:54:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:54:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:54:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:54:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:54:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:54:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:54:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:54:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:54:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:54:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:54:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:54:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:54:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:54:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:54:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:54:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:54:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:54:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:54:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:54:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:54:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:54:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:54:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 22:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 22:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 22:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 22:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 22:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:54:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:54:34,273 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:54:34,273 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-28 22:54:34,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:34 BoogieIcfgContainer [2018-11-28 22:54:34,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:54:34,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:54:34,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:54:34,279 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:54:34,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:54:32" (1/3) ... [2018-11-28 22:54:34,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17449184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:34, skipping insertion in model container [2018-11-28 22:54:34,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:33" (2/3) ... [2018-11-28 22:54:34,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17449184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:34, skipping insertion in model container [2018-11-28 22:54:34,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:34" (3/3) ... [2018-11-28 22:54:34,284 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:34,295 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:54:34,302 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-11-28 22:54:34,317 INFO L257 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2018-11-28 22:54:34,349 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:54:34,350 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:54:34,350 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:54:34,350 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:54:34,353 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:54:34,353 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:54:34,354 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:54:34,354 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:54:34,354 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:54:34,379 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-11-28 22:54:34,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:34,388 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:34,389 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:34,392 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-11-28 22:54:34,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:34,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1826486959, now seen corresponding path program 1 times [2018-11-28 22:54:34,403 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:34,404 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 22:54:34,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:34,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:34,499 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:34,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:34,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:54:34,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 22:54:34,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 22:54:34,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 22:54:34,528 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-11-28 22:54:34,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:34,551 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2018-11-28 22:54:34,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 22:54:34,553 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 22:54:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:34,561 INFO L225 Difference]: With dead ends: 60 [2018-11-28 22:54:34,561 INFO L226 Difference]: Without dead ends: 52 [2018-11-28 22:54:34,563 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 22:54:34,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-28 22:54:34,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-11-28 22:54:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 22:54:34,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-11-28 22:54:34,603 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 10 [2018-11-28 22:54:34,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:34,604 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-11-28 22:54:34,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 22:54:34,604 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-11-28 22:54:34,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:34,605 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:34,605 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:34,605 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-11-28 22:54:34,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:34,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1826487920, now seen corresponding path program 1 times [2018-11-28 22:54:34,606 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:34,606 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 22:54:34,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:34,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:34,722 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 22:54:34,725 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:34,753 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:34,753 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-28 22:54:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:34,886 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:34,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:34,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:34,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:34,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:34,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:34,892 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 4 states. [2018-11-28 22:54:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:35,552 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2018-11-28 22:54:35,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:35,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 22:54:35,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:35,557 INFO L225 Difference]: With dead ends: 59 [2018-11-28 22:54:35,557 INFO L226 Difference]: Without dead ends: 59 [2018-11-28 22:54:35,558 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:35,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-28 22:54:35,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2018-11-28 22:54:35,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-28 22:54:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2018-11-28 22:54:35,567 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 10 [2018-11-28 22:54:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:35,568 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2018-11-28 22:54:35,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2018-11-28 22:54:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:35,569 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:35,569 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:35,571 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-11-28 22:54:35,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:35,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1826487919, now seen corresponding path program 1 times [2018-11-28 22:54:35,571 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:35,572 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:35,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:35,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:35,638 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 22:54:35,639 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:35,648 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:35,648 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 22:54:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:35,792 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:35,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:35,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:35,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:35,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:35,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:35,799 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 4 states. [2018-11-28 22:54:36,015 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-28 22:54:36,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:36,744 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2018-11-28 22:54:36,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:36,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 22:54:36,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:36,747 INFO L225 Difference]: With dead ends: 70 [2018-11-28 22:54:36,747 INFO L226 Difference]: Without dead ends: 70 [2018-11-28 22:54:36,747 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-28 22:54:36,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2018-11-28 22:54:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-28 22:54:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-11-28 22:54:36,755 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 10 [2018-11-28 22:54:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:36,755 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-11-28 22:54:36,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:36,756 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-11-28 22:54:36,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 22:54:36,757 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:36,757 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:36,757 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2018-11-28 22:54:36,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:36,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2006915837, now seen corresponding path program 1 times [2018-11-28 22:54:36,758 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:36,758 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 22:54:36,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:36,912 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 22:54:36,942 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 22:54:36,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:54:36 BoogieIcfgContainer [2018-11-28 22:54:36,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:54:36,970 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:54:36,970 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:54:36,970 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:54:36,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:34" (3/4) ... [2018-11-28 22:54:36,982 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 22:54:36,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:54:36,985 INFO L168 Benchmark]: Toolchain (without parser) took 4358.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 950.0 MB in the beginning and 970.6 MB in the end (delta: -20.6 MB). Peak memory consumption was 101.1 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:36,988 INFO L168 Benchmark]: CDTParser took 0.15 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 22:54:36,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 562.03 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 917.8 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:36,990 INFO L168 Benchmark]: Boogie Preprocessor took 145.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 917.8 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:36,994 INFO L168 Benchmark]: RCFGBuilder took 937.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:36,995 INFO L168 Benchmark]: TraceAbstraction took 2694.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.6 MB in the end (delta: 93.8 MB). Peak memory consumption was 93.8 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:36,996 INFO L168 Benchmark]: Witness Printer took 14.20 ms. Allocated memory is still 1.2 GB. Free memory is still 970.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:37,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 562.03 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 917.8 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 145.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 917.8 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 937.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2694.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.6 MB in the end (delta: 93.8 MB). Peak memory consumption was 93.8 MB. Max. memory is 11.5 GB. * Witness Printer took 14.20 ms. Allocated memory is still 1.2 GB. Free memory is still 970.6 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: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] a = (List) malloc(sizeof(struct node)) VAL [a={-2147483648:0}, flag=0, malloc(sizeof(struct node))={-2147483648:0}] [L630] COND FALSE !(a == 0) VAL [a={-2147483648:0}, flag=0, malloc(sizeof(struct node))={-2147483648:0}] [L631] p = a VAL [a={-2147483648:0}, flag=0, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] p->h = 3 VAL [a={-2147483648:0}, flag=0, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L644] p = a VAL [a={-2147483648:0}, flag=0, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L645] COND FALSE !(\read(flag)) VAL [a={-2147483648:0}, flag=0, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L649] EXPR p->h VAL [a={-2147483648:0}, flag=0, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR p->h VAL [a={-2147483648:0}, flag=0, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=3] [L651] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 62 locations, 21 error locations. UNSAFE Result, 2.6s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 114 SDtfs, 177 SDslu, 33 SDs, 0 SdLazy, 102 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=3, 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, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 747 SizeOfPredicates, 6 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...