./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/list-properties/simple_built_from_end_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/simple_built_from_end_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 a16cd99b349cc6bdff463f25bc1978dcd091a75b .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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/simple_built_from_end_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 a16cd99b349cc6bdff463f25bc1978dcd091a75b ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:54:31,829 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:54:31,832 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:54:31,845 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:54:31,845 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:54:31,847 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:54:31,848 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:54:31,850 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:54:31,852 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:54:31,853 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:54:31,854 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:54:31,854 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:54:31,856 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:54:31,857 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:54:31,858 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:54:31,859 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:54:31,860 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:54:31,862 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:54:31,864 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:54:31,866 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:54:31,867 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:54:31,869 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:54:31,872 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:54:31,872 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:54:31,872 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:54:31,873 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:54:31,875 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:54:31,876 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:54:31,877 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:54:31,878 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:54:31,878 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:54:31,879 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:54:31,879 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:54:31,879 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:54:31,881 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:54:31,882 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:54:31,882 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 22:54:31,898 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:54:31,898 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:54:31,899 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:54:31,899 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:54:31,900 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:54:31,900 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:54:31,900 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:54:31,900 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:54:31,901 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:54:31,902 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:54:31,902 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:54:31,902 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:54:31,902 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:54:31,902 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:54:31,902 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:54:31,903 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:54:31,903 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:54:31,903 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:54:31,903 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:54:31,903 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:54:31,903 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:54:31,905 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:54:31,905 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:54:31,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:54:31,905 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:54:31,906 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:54:31,906 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 22:54:31,906 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:54:31,907 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 -> a16cd99b349cc6bdff463f25bc1978dcd091a75b [2018-11-28 22:54:31,943 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:54:31,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:54:31,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:54:31,963 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:54:31,964 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:54:31,965 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:32,032 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9352afe7e/72477a76ad3a442b893157c67b6afdfd/FLAG481365bfc [2018-11-28 22:54:32,514 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:54:32,515 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:32,528 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9352afe7e/72477a76ad3a442b893157c67b6afdfd/FLAG481365bfc [2018-11-28 22:54:32,817 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9352afe7e/72477a76ad3a442b893157c67b6afdfd [2018-11-28 22:54:32,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:54:32,823 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:54:32,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:32,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:54:32,833 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:54:32,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:32" (1/1) ... [2018-11-28 22:54:32,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70721adf 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 22:54:32,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:32" (1/1) ... [2018-11-28 22:54:32,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:54:32,905 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:54:33,264 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:33,279 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:54:33,329 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:33,390 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:54:33,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:33 WrapperNode [2018-11-28 22:54:33,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:33,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:54:33,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:54:33,393 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:54:33,485 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 22:54:33,485 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 22:54:33,514 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 22:54:33,514 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 22:54:33,529 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 22:54:33,534 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 22:54:33,539 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 22:54:33,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:54:33,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:54:33,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:54:33,555 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:54:33,556 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 22:54:33,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:54:33,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:54:33,626 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 22:54:33,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:54:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 22:54:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:54:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:54:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:54:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:54:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:54:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:54:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:54:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:54:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:54:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:54:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:54:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:54:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:54:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:54:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:54:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:54:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:54:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:54:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:54:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:54:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:54:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:54:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:54:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:54:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:54:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:54:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:54:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:54:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:54:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:54:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:54:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:54:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:54:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:54:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:54:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:54:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:54:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:54:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:54:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:54:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:54:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:54:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:54:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:54:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:54:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:54:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:54:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:54:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:54:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:54:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:54:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:54:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:54:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:54:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:54:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:54:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:54:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:54:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:54:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:54:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:54:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:54:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:54:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:54:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:54:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 22:54:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:54:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:54:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:54:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:54:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:54:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:54:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:54:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:54:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:54:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:54:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:54:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:54:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 22:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 22:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 22:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 22:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 22:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:54:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:54:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:54:34,257 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:54:34,259 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 22:54:34,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:34 BoogieIcfgContainer [2018-11-28 22:54:34,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:54:34,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:54:34,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:54:34,264 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:54:34,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:54:32" (1/3) ... [2018-11-28 22:54:34,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0cdf22 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 22:54:34,265 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 22:54:34,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0cdf22 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 22:54:34,265 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 22:54:34,267 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:34,278 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:54:34,287 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-11-28 22:54:34,305 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-11-28 22:54:34,333 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:54:34,334 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:54:34,334 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:54:34,334 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:54:34,335 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:54:34,336 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:54:34,336 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:54:34,336 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:54:34,336 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:54:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-11-28 22:54:34,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 22:54:34,363 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:34,364 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:34,367 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:54:34,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:34,373 INFO L82 PathProgramCache]: Analyzing trace with hash 350138613, now seen corresponding path program 1 times [2018-11-28 22:54:34,375 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:34,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:34,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:34,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:34,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [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 22:54:34,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:34,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:54:34,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 22:54:34,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 22:54:34,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 22:54:34,523 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-11-28 22:54:34,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:34,539 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-11-28 22:54:34,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 22:54:34,541 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-28 22:54:34,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:34,550 INFO L225 Difference]: With dead ends: 34 [2018-11-28 22:54:34,551 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 22:54:34,553 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 22:54:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 22:54:34,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-28 22:54:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 22:54:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-28 22:54:34,586 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2018-11-28 22:54:34,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:34,586 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-28 22:54:34,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 22:54:34,586 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-28 22:54:34,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:34,587 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:34,587 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:34,587 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:54:34,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:34,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2031253782, now seen corresponding path program 1 times [2018-11-28 22:54:34,588 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:34,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:34,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:34,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:34,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:34,674 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 22:54:34,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:34,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:54:34,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:54:34,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:54:34,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:34,677 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 3 states. [2018-11-28 22:54:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:34,856 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-11-28 22:54:34,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:54:34,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 22:54:34,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:34,859 INFO L225 Difference]: With dead ends: 38 [2018-11-28 22:54:34,859 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 22:54:34,860 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:34,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 22:54:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2018-11-28 22:54:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 22:54:34,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-28 22:54:34,866 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2018-11-28 22:54:34,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:34,867 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-28 22:54:34,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:54:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-28 22:54:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:34,868 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:34,869 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:34,869 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:54:34,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:34,869 INFO L82 PathProgramCache]: Analyzing trace with hash -2031253781, now seen corresponding path program 1 times [2018-11-28 22:54:34,870 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:34,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:34,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:34,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:34,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:35,110 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-11-28 22:54:35,113 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 22:54:35,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:35,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:54:35,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:54:35,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:54:35,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:35,114 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 3 states. [2018-11-28 22:54:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:35,305 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-11-28 22:54:35,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:54:35,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 22:54:35,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:35,306 INFO L225 Difference]: With dead ends: 36 [2018-11-28 22:54:35,306 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 22:54:35,307 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 22:54:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2018-11-28 22:54:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 22:54:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-11-28 22:54:35,311 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 10 [2018-11-28 22:54:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:35,312 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-28 22:54:35,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:54:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-11-28 22:54:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:35,312 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:35,313 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:35,313 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:54:35,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:35,313 INFO L82 PathProgramCache]: Analyzing trace with hash -2031255141, now seen corresponding path program 1 times [2018-11-28 22:54:35,313 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:35,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:35,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:35,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:35,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:35,351 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 22:54:35,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:35,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:54:35,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:54:35,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:54:35,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:35,354 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2018-11-28 22:54:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:35,398 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-11-28 22:54:35,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:54:35,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 22:54:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:35,400 INFO L225 Difference]: With dead ends: 35 [2018-11-28 22:54:35,400 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 22:54:35,401 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 22:54:35,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-11-28 22:54:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 22:54:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2018-11-28 22:54:35,406 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 10 [2018-11-28 22:54:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:35,406 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2018-11-28 22:54:35,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:54:35,407 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2018-11-28 22:54:35,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:35,407 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:35,407 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:35,408 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:54:35,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:35,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2031255097, now seen corresponding path program 1 times [2018-11-28 22:54:35,408 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:35,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:35,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:35,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:35,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:35,477 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 22:54:35,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:35,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:35,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:54:35,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:54:35,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:35,478 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2018-11-28 22:54:35,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:35,572 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-11-28 22:54:35,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:54:35,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 22:54:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:35,573 INFO L225 Difference]: With dead ends: 30 [2018-11-28 22:54:35,574 INFO L226 Difference]: Without dead ends: 29 [2018-11-28 22:54:35,575 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:35,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-28 22:54:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2018-11-28 22:54:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 22:54:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-28 22:54:35,580 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2018-11-28 22:54:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:35,580 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-28 22:54:35,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:54:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-28 22:54:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 22:54:35,581 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:35,581 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:35,582 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:54:35,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486843, now seen corresponding path program 1 times [2018-11-28 22:54:35,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:35,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:35,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:35,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:35,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:35,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:35,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 22:54:35,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:35,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:35,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:35,655 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2018-11-28 22:54:35,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:35,757 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2018-11-28 22:54:35,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:35,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-28 22:54:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:35,760 INFO L225 Difference]: With dead ends: 38 [2018-11-28 22:54:35,760 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 22:54:35,764 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 22:54:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2018-11-28 22:54:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 22:54:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-11-28 22:54:35,769 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2018-11-28 22:54:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:35,769 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-11-28 22:54:35,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-11-28 22:54:35,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 22:54:35,771 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:35,771 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:35,772 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:54:35,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:35,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486799, now seen corresponding path program 1 times [2018-11-28 22:54:35,773 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:35,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:35,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:35,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:35,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:35,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:35,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:35,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:35,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:35,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:35,845 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 4 states. [2018-11-28 22:54:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:36,191 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-11-28 22:54:36,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:36,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-28 22:54:36,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:36,194 INFO L225 Difference]: With dead ends: 31 [2018-11-28 22:54:36,194 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 22:54:36,195 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 22:54:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 22:54:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2018-11-28 22:54:36,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 22:54:36,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-28 22:54:36,203 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2018-11-28 22:54:36,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:36,210 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-28 22:54:36,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-28 22:54:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 22:54:36,211 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:36,211 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:36,211 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:54:36,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:36,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1153486798, now seen corresponding path program 1 times [2018-11-28 22:54:36,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:36,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:36,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:36,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:36,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:36,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:36,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:36,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:36,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:36,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:36,333 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2018-11-28 22:54:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:36,495 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-11-28 22:54:36,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:36,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-28 22:54:36,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:36,500 INFO L225 Difference]: With dead ends: 33 [2018-11-28 22:54:36,500 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 22:54:36,501 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 22:54:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-11-28 22:54:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 22:54:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-11-28 22:54:36,504 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2018-11-28 22:54:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:36,505 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-11-28 22:54:36,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-11-28 22:54:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 22:54:36,506 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:36,506 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:36,506 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2018-11-28 22:54:36,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:36,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1315071203, now seen corresponding path program 1 times [2018-11-28 22:54:36,507 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:36,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:36,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:36,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:36,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:36,596 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 22:54:36,612 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 22:54:36,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:54:36 BoogieIcfgContainer [2018-11-28 22:54:36,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:54:36,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:54:36,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:54:36,628 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:54:36,630 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 22:54:36,633 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 22:54:36,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:54:36,634 INFO L168 Benchmark]: Toolchain (without parser) took 3812.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 950.0 MB in the beginning and 986.8 MB in the end (delta: -36.8 MB). Peak memory consumption was 97.5 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:36,635 INFO L168 Benchmark]: CDTParser took 0.44 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 22:54:36,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.61 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 928.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:36,637 INFO L168 Benchmark]: Boogie Preprocessor took 159.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 928.5 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:36,638 INFO L168 Benchmark]: RCFGBuilder took 704.59 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: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:36,639 INFO L168 Benchmark]: TraceAbstraction took 2367.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 986.8 MB in the end (delta: 94.6 MB). Peak memory consumption was 94.6 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:36,639 INFO L168 Benchmark]: Witness Printer took 5.39 ms. Allocated memory is still 1.2 GB. Free memory is still 986.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:36,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 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 565.61 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 928.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 159.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 928.5 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 704.59 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: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2367.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 986.8 MB in the end (delta: 94.6 MB). Peak memory consumption was 94.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.39 ms. Allocated memory is still 1.2 GB. Free memory is still 986.8 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] List t; [L628] List p = 0; VAL [p={0:0}] [L629] COND TRUE __VERIFIER_nondet_int() [L630] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={14:0}, p={0:0}, t={14:0}] [L631] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={14:0}, p={0:0}, t={14:0}] [L632] t->h = 1 VAL [malloc(sizeof(struct node))={14:0}, p={0:0}, t={14:0}] [L633] t->n = p VAL [malloc(sizeof(struct node))={14:0}, p={0:0}, t={14:0}] [L634] p = t VAL [malloc(sizeof(struct node))={14:0}, p={14:0}, t={14:0}] [L629] COND FALSE !(__VERIFIER_nondet_int()) [L636] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={14:0}, p={14:0}, t={14:0}] [L637] EXPR p->h VAL [malloc(sizeof(struct node))={14:0}, p={14:0}, p->h=1, t={14:0}] [L637] COND FALSE !(p->h != 1) [L640] EXPR p->n VAL [malloc(sizeof(struct node))={14:0}, p={14:0}, p->n={0:0}, t={14:0}] [L640] p = p->n [L636] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={14:0}, p={0:0}, t={14:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 9 error locations. UNSAFE Result, 2.3s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 177 SDtfs, 132 SDslu, 88 SDs, 0 SdLazy, 146 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 3166 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 6/6 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 22:54:38,946 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:54:38,948 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:54:38,960 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:54:38,961 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:54:38,962 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:54:38,964 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:54:38,966 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:54:38,968 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:54:38,968 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:54:38,969 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:54:38,969 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:54:38,971 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:54:38,972 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:54:38,973 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:54:38,974 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:54:38,975 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:54:38,977 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:54:38,979 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:54:38,981 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:54:38,982 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:54:38,983 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:54:38,986 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:54:38,987 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:54:38,987 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:54:38,988 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:54:38,989 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:54:38,991 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:54:38,991 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:54:38,993 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:54:38,993 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:54:38,994 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:54:38,994 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:54:38,994 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:54:38,996 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:54:38,997 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:54:38,998 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-11-28 22:54:39,014 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:54:39,014 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:54:39,015 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:54:39,015 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:54:39,016 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:54:39,016 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:54:39,016 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:54:39,016 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:54:39,017 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:54:39,017 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:54:39,017 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:54:39,017 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:54:39,017 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:54:39,017 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:54:39,018 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:54:39,018 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:54:39,018 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:54:39,018 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 22:54:39,018 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 22:54:39,018 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:54:39,020 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:54:39,021 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:54:39,021 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:54:39,021 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:54:39,021 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:54:39,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:54:39,021 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:54:39,022 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:54:39,023 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 22:54:39,023 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:54:39,023 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 22:54:39,023 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 -> a16cd99b349cc6bdff463f25bc1978dcd091a75b [2018-11-28 22:54:39,059 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:54:39,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:54:39,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:54:39,078 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:54:39,078 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:54:39,079 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:39,136 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d215dbc8/ca4548cb644e43bebf0877dc98374ea8/FLAGc141f901e [2018-11-28 22:54:39,687 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:54:39,688 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:39,702 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d215dbc8/ca4548cb644e43bebf0877dc98374ea8/FLAGc141f901e [2018-11-28 22:54:39,948 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d215dbc8/ca4548cb644e43bebf0877dc98374ea8 [2018-11-28 22:54:39,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:54:39,954 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:54:39,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:39,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:54:39,959 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:54:39,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:39" (1/1) ... [2018-11-28 22:54:39,963 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 10:54:39, skipping insertion in model container [2018-11-28 22:54:39,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:39" (1/1) ... [2018-11-28 22:54:39,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:54:40,017 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:54:40,425 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:40,453 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:54:40,526 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:40,659 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:54:40,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:40 WrapperNode [2018-11-28 22:54:40,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:40,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:54:40,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:54:40,661 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:54:40,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:40" (1/1) ... [2018-11-28 22:54:40,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:40" (1/1) ... [2018-11-28 22:54:40,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:40" (1/1) ... [2018-11-28 22:54:40,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:40" (1/1) ... [2018-11-28 22:54:40,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:40" (1/1) ... [2018-11-28 22:54:40,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:40" (1/1) ... [2018-11-28 22:54:40,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:40" (1/1) ... [2018-11-28 22:54:40,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:54:40,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:54:40,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:54:40,750 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:54:40,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:40" (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 22:54:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:54:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:54:40,803 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 22:54:40,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:54:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 22:54:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:54:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:54:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:54:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:54:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:54:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:54:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:54:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:54:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:54:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:54:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:54:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:54:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:54:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:54:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:54:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:54:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:54:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:54:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:54:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:54:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:54:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:54:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:54:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:54:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:54:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:54:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:54:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:54:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:54:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:54:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:54:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:54:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:54:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:54:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:54:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:54:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:54:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:54:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:54:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:54:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:54:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:54:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:54:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:54:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:54:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:54:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:54:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:54:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:54:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:54:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:54:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:54:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:54:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:54:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:54:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:54:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:54:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:54:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:54:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:54:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:54:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:54:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:54:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:54:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:54:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 22:54:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:54:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:54:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:54:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:54:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:54:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:54:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:54:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:54:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:54:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:54:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:54:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:54:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:54:40,816 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:54:40,816 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:54:40,816 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:54:40,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:54:40,816 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:54:40,816 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:54:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:54:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:54:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:54:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:54:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:54:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:54:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:54:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:54:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:54:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:54:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:54:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:54:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:54:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:54:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:54:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:54:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:54:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 22:54:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:54:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:54:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 22:54:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 22:54:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 22:54:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 22:54:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:54:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:54:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:54:41,550 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:54:41,550 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 22:54:41,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:41 BoogieIcfgContainer [2018-11-28 22:54:41,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:54:41,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:54:41,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:54:41,556 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:54:41,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:54:39" (1/3) ... [2018-11-28 22:54:41,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300a621f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:41, skipping insertion in model container [2018-11-28 22:54:41,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:40" (2/3) ... [2018-11-28 22:54:41,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300a621f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:41, skipping insertion in model container [2018-11-28 22:54:41,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:41" (3/3) ... [2018-11-28 22:54:41,559 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:41,569 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:54:41,576 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-11-28 22:54:41,590 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-11-28 22:54:41,617 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:54:41,618 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:54:41,619 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:54:41,619 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:54:41,621 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:54:41,621 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:54:41,622 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:54:41,622 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:54:41,622 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:54:41,643 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-11-28 22:54:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 22:54:41,653 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:41,654 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:41,659 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:54:41,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:41,668 INFO L82 PathProgramCache]: Analyzing trace with hash 2128039411, now seen corresponding path program 1 times [2018-11-28 22:54:41,673 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:41,675 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 22:54:41,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:41,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:41,767 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 22:54:41,767 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:41,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:41,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:54:41,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 22:54:41,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 22:54:41,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 22:54:41,794 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-11-28 22:54:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:41,813 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-11-28 22:54:41,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 22:54:41,815 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-28 22:54:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:41,826 INFO L225 Difference]: With dead ends: 33 [2018-11-28 22:54:41,826 INFO L226 Difference]: Without dead ends: 26 [2018-11-28 22:54:41,828 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 22:54:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-28 22:54:41,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-28 22:54:41,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 22:54:41,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-11-28 22:54:41,867 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 9 [2018-11-28 22:54:41,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:41,867 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-11-28 22:54:41,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 22:54:41,867 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-11-28 22:54:41,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 22:54:41,868 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:41,868 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:41,869 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:54:41,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:41,869 INFO L82 PathProgramCache]: Analyzing trace with hash 2128023472, now seen corresponding path program 1 times [2018-11-28 22:54:41,869 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:41,870 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 22:54:41,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:41,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:41,964 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 22:54:41,967 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:41,973 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:41,974 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-28 22:54:41,992 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 22:54:41,993 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:41,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:41,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:54:41,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:54:41,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:54:41,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:41,997 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 3 states. [2018-11-28 22:54:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:42,136 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-11-28 22:54:42,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:54:42,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 22:54:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:42,139 INFO L225 Difference]: With dead ends: 36 [2018-11-28 22:54:42,139 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 22:54:42,140 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 22:54:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2018-11-28 22:54:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 22:54:42,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-28 22:54:42,145 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 9 [2018-11-28 22:54:42,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:42,145 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-28 22:54:42,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:54:42,146 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-28 22:54:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 22:54:42,146 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:42,147 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:42,147 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:54:42,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:42,147 INFO L82 PathProgramCache]: Analyzing trace with hash 2128023473, now seen corresponding path program 1 times [2018-11-28 22:54:42,148 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:42,148 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 22:54:42,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:42,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:42,226 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 22:54:42,226 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:42,245 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:42,246 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 22:54:42,264 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 22:54:42,264 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:42,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:42,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:54:42,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:54:42,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:54:42,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:42,275 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2018-11-28 22:54:42,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:42,424 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-11-28 22:54:42,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:54:42,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 22:54:42,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:42,428 INFO L225 Difference]: With dead ends: 34 [2018-11-28 22:54:42,428 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 22:54:42,428 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:42,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 22:54:42,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2018-11-28 22:54:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 22:54:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-11-28 22:54:42,432 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 9 [2018-11-28 22:54:42,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:42,433 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-11-28 22:54:42,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:54:42,433 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-11-28 22:54:42,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 22:54:42,434 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:42,434 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:42,434 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:54:42,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:42,435 INFO L82 PathProgramCache]: Analyzing trace with hash 2128022113, now seen corresponding path program 1 times [2018-11-28 22:54:42,435 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:42,435 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 22:54:42,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:42,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:42,521 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 22:54:42,521 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:42,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:42,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:54:42,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:54:42,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:54:42,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:42,530 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 3 states. [2018-11-28 22:54:42,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:42,766 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-11-28 22:54:42,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:54:42,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 22:54:42,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:42,769 INFO L225 Difference]: With dead ends: 33 [2018-11-28 22:54:42,769 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 22:54:42,769 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 22:54:42,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-11-28 22:54:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 22:54:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2018-11-28 22:54:42,777 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 9 [2018-11-28 22:54:42,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:42,777 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-11-28 22:54:42,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:54:42,778 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2018-11-28 22:54:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 22:54:42,781 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:42,781 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:42,782 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:54:42,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:42,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2128022157, now seen corresponding path program 1 times [2018-11-28 22:54:42,782 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:42,783 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:42,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:42,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:42,895 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 22:54:42,896 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:42,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:42,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:42,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:54:42,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:54:42,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:42,900 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 3 states. [2018-11-28 22:54:42,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:42,974 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-28 22:54:42,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:54:42,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 22:54:42,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:42,976 INFO L225 Difference]: With dead ends: 28 [2018-11-28 22:54:42,976 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 22:54:42,976 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:54:42,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 22:54:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-11-28 22:54:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 22:54:42,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-11-28 22:54:42,980 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2018-11-28 22:54:42,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:42,980 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-28 22:54:42,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:54:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-11-28 22:54:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 22:54:42,981 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:42,981 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:42,982 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:54:42,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:42,982 INFO L82 PathProgramCache]: Analyzing trace with hash -194724622, now seen corresponding path program 1 times [2018-11-28 22:54:42,982 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:42,983 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:43,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:43,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:43,159 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:43,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:43,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 22:54:43,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:43,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:43,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:43,163 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2018-11-28 22:54:43,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:43,485 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-11-28 22:54:43,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:43,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-28 22:54:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:43,487 INFO L225 Difference]: With dead ends: 36 [2018-11-28 22:54:43,487 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 22:54:43,488 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 22:54:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 22:54:43,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2018-11-28 22:54:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 22:54:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-28 22:54:43,496 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2018-11-28 22:54:43,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:43,496 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-28 22:54:43,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-28 22:54:43,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 22:54:43,499 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:43,499 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:43,499 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:54:43,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:43,500 INFO L82 PathProgramCache]: Analyzing trace with hash -194724578, now seen corresponding path program 1 times [2018-11-28 22:54:43,501 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:43,501 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:43,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:43,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:43,610 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 22:54:43,610 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,633 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:43,634 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-28 22:54:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:43,747 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:43,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:43,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:43,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:43,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:43,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:43,753 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 4 states. [2018-11-28 22:54:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:44,250 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-11-28 22:54:44,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:44,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-28 22:54:44,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:44,253 INFO L225 Difference]: With dead ends: 29 [2018-11-28 22:54:44,253 INFO L226 Difference]: Without dead ends: 29 [2018-11-28 22:54:44,253 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 22:54:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-28 22:54:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2018-11-28 22:54:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 22:54:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-11-28 22:54:44,257 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2018-11-28 22:54:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:44,257 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-11-28 22:54:44,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-11-28 22:54:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 22:54:44,258 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:44,258 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:44,258 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:54:44,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:44,259 INFO L82 PathProgramCache]: Analyzing trace with hash -194724577, now seen corresponding path program 1 times [2018-11-28 22:54:44,259 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:44,259 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:44,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:44,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:44,356 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 22:54:44,356 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:44,366 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:44,366 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 22:54:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:44,405 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:44,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:44,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:44,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:44,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:44,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:44,412 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2018-11-28 22:54:44,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:44,572 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-11-28 22:54:44,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:44,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-28 22:54:44,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:44,576 INFO L225 Difference]: With dead ends: 31 [2018-11-28 22:54:44,576 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 22:54:44,577 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 22:54:44,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 22:54:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2018-11-28 22:54:44,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 22:54:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-11-28 22:54:44,581 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 14 [2018-11-28 22:54:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:44,581 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-11-28 22:54:44,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-11-28 22:54:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:54:44,582 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:44,582 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:44,582 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:54:44,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:44,583 INFO L82 PathProgramCache]: Analyzing trace with hash -496137585, now seen corresponding path program 1 times [2018-11-28 22:54:44,583 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:44,583 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:44,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:44,769 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 22:54:44,770 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:44,803 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 22:54:44,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:54:44 BoogieIcfgContainer [2018-11-28 22:54:44,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:54:44,821 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:54:44,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:54:44,821 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:54:44,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:41" (3/4) ... [2018-11-28 22:54:44,826 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 22:54:44,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:54:44,828 INFO L168 Benchmark]: Toolchain (without parser) took 4875.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 951.3 MB in the beginning and 931.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 160.6 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:44,830 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 22:54:44,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:44,832 INFO L168 Benchmark]: Boogie Preprocessor took 87.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:44,833 INFO L168 Benchmark]: RCFGBuilder took 802.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:44,834 INFO L168 Benchmark]: TraceAbstraction took 3267.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 931.8 MB in the end (delta: 143.1 MB). Peak memory consumption was 143.1 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:44,835 INFO L168 Benchmark]: Witness Printer took 6.04 ms. Allocated memory is still 1.2 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:44,839 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 705.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 87.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 802.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3267.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 931.8 MB in the end (delta: 143.1 MB). Peak memory consumption was 143.1 MB. Max. memory is 11.5 GB. * Witness Printer took 6.04 ms. Allocated memory is still 1.2 GB. Free memory is still 931.8 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] List t; [L628] List p = 0; VAL [p={0:0}] [L629] COND TRUE __VERIFIER_nondet_int() [L630] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={-2147483648:0}, p={0:0}, t={-2147483648:0}] [L631] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={-2147483648:0}, p={0:0}, t={-2147483648:0}] [L632] t->h = 1 VAL [malloc(sizeof(struct node))={-2147483648:0}, p={0:0}, t={-2147483648:0}] [L633] t->n = p VAL [malloc(sizeof(struct node))={-2147483648:0}, p={0:0}, t={-2147483648:0}] [L634] p = t VAL [malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, t={-2147483648:0}] [L629] COND FALSE !(__VERIFIER_nondet_int()) [L636] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, t={-2147483648:0}] [L637] EXPR p->h VAL [malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=1, t={-2147483648:0}] [L637] COND FALSE !(p->h != 1) [L640] EXPR p->n VAL [malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->n={0:0}, t={-2147483648:0}] [L640] p = p->n [L636] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={-2147483648:0}, p={0:0}, t={-2147483648:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 9 error locations. UNSAFE Result, 3.2s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 164 SDtfs, 126 SDslu, 78 SDs, 0 SdLazy, 146 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 54 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 2855 SizeOfPredicates, 13 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 3/3 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...