./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f6fb2bb1 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/mult_array_unsafe.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 4ceec10d001c6e3ab8acae30cb42f114023e2890 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-f6fb2bb [2019-11-19 19:46:44,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 19:46:44,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 19:46:44,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 19:46:44,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 19:46:44,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 19:46:44,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 19:46:44,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 19:46:44,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 19:46:44,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 19:46:44,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 19:46:44,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 19:46:44,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 19:46:44,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 19:46:44,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 19:46:44,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 19:46:44,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 19:46:44,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 19:46:44,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 19:46:44,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 19:46:44,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 19:46:44,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 19:46:44,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 19:46:44,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 19:46:44,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 19:46:44,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 19:46:44,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 19:46:44,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 19:46:44,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 19:46:44,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 19:46:44,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 19:46:44,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 19:46:44,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 19:46:44,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 19:46:44,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 19:46:44,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 19:46:44,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 19:46:44,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 19:46:44,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 19:46:44,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 19:46:44,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 19:46:44,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-19 19:46:44,850 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 19:46:44,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 19:46:44,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 19:46:44,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 19:46:44,852 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 19:46:44,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 19:46:44,853 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 19:46:44,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 19:46:44,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 19:46:44,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 19:46:44,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 19:46:44,855 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 19:46:44,855 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 19:46:44,855 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-19 19:46:44,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 19:46:44,856 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 19:46:44,856 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 19:46:44,857 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 19:46:44,857 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 19:46:44,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 19:46:44,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 19:46:44,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 19:46:44,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 19:46:44,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 19:46:44,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 19:46:44,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 19:46:44,860 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 19:46:44,860 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 19:46:44,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 19:46:44,861 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ceec10d001c6e3ab8acae30cb42f114023e2890 [2019-11-19 19:46:45,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 19:46:45,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 19:46:45,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 19:46:45,306 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 19:46:45,306 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 19:46:45,307 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2019-11-19 19:46:45,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5544ab9d2/315c0052739148eba8b401cf478facf3/FLAG7696d2a98 [2019-11-19 19:46:45,912 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 19:46:45,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2019-11-19 19:46:45,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5544ab9d2/315c0052739148eba8b401cf478facf3/FLAG7696d2a98 [2019-11-19 19:46:46,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5544ab9d2/315c0052739148eba8b401cf478facf3 [2019-11-19 19:46:46,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 19:46:46,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 19:46:46,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 19:46:46,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 19:46:46,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 19:46:46,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:46" (1/1) ... [2019-11-19 19:46:46,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539c682b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46, skipping insertion in model container [2019-11-19 19:46:46,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:46" (1/1) ... [2019-11-19 19:46:46,235 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 19:46:46,292 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 19:46:46,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:46:46,721 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 19:46:46,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:46:46,828 INFO L192 MainTranslator]: Completed translation [2019-11-19 19:46:46,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46 WrapperNode [2019-11-19 19:46:46,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 19:46:46,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 19:46:46,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 19:46:46,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 19:46:46,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2019-11-19 19:46:46,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2019-11-19 19:46:46,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2019-11-19 19:46:46,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2019-11-19 19:46:46,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2019-11-19 19:46:46,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2019-11-19 19:46:46,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2019-11-19 19:46:46,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 19:46:46,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 19:46:46,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 19:46:46,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 19:46:46,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 19:46:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 19:46:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 19:46:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-19 19:46:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-19 19:46:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-19 19:46:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-19 19:46:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-19 19:46:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 19:46:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-19 19:46:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-19 19:46:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-19 19:46:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-19 19:46:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-19 19:46:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-19 19:46:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-19 19:46:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-19 19:46:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-19 19:46:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-19 19:46:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-19 19:46:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-19 19:46:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-19 19:46:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-19 19:46:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-19 19:46:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-19 19:46:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-19 19:46:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-19 19:46:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-19 19:46:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-19 19:46:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-19 19:46:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-19 19:46:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-19 19:46:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-19 19:46:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-19 19:46:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-19 19:46:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-19 19:46:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-19 19:46:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-19 19:46:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-19 19:46:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-19 19:46:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-19 19:46:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-19 19:46:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-19 19:46:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-19 19:46:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-19 19:46:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-19 19:46:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-19 19:46:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-19 19:46:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-19 19:46:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-19 19:46:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-19 19:46:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-19 19:46:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-19 19:46:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-19 19:46:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-19 19:46:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-19 19:46:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-19 19:46:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-19 19:46:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-19 19:46:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-19 19:46:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-19 19:46:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-19 19:46:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-19 19:46:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-19 19:46:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-19 19:46:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-19 19:46:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-19 19:46:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-19 19:46:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-19 19:46:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-19 19:46:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-19 19:46:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-19 19:46:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-19 19:46:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-19 19:46:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-19 19:46:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-19 19:46:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-19 19:46:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-19 19:46:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-19 19:46:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-19 19:46:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-19 19:46:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-19 19:46:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-19 19:46:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-19 19:46:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-19 19:46:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-19 19:46:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-19 19:46:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-19 19:46:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-19 19:46:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-19 19:46:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-19 19:46:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-19 19:46:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-19 19:46:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-19 19:46:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-19 19:46:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-19 19:46:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-19 19:46:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-19 19:46:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-19 19:46:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-19 19:46:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-19 19:46:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-19 19:46:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-19 19:46:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-19 19:46:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-19 19:46:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-19 19:46:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-19 19:46:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-19 19:46:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-19 19:46:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-19 19:46:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-19 19:46:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-19 19:46:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-19 19:46:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-19 19:46:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-19 19:46:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-19 19:46:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-19 19:46:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 19:46:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 19:46:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 19:46:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-19 19:46:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-19 19:46:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 19:46:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 19:46:47,651 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 19:46:47,651 INFO L285 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-19 19:46:47,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:47 BoogieIcfgContainer [2019-11-19 19:46:47,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 19:46:47,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 19:46:47,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 19:46:47,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 19:46:47,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:46" (1/3) ... [2019-11-19 19:46:47,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61499250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:47, skipping insertion in model container [2019-11-19 19:46:47,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (2/3) ... [2019-11-19 19:46:47,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61499250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:47, skipping insertion in model container [2019-11-19 19:46:47,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:47" (3/3) ... [2019-11-19 19:46:47,662 INFO L109 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe.i [2019-11-19 19:46:47,673 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 19:46:47,681 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-19 19:46:47,694 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-19 19:46:47,716 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 19:46:47,716 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 19:46:47,717 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 19:46:47,717 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 19:46:47,718 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 19:46:47,718 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 19:46:47,719 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 19:46:47,719 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 19:46:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-19 19:46:47,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 19:46:47,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:46:47,746 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:46:47,747 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 19:46:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:46:47,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2019-11-19 19:46:47,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:46:47,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [539541262] [2019-11-19 19:46:47,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-19 19:46:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:46:48,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 19:46:48,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:46:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:46:48,223 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 19:46:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:46:48,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [539541262] [2019-11-19 19:46:48,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:46:48,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-19 19:46:48,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313477480] [2019-11-19 19:46:48,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 19:46:48,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 19:46:48,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 19:46:48,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 19:46:48,284 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-11-19 19:46:48,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:46:48,444 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-11-19 19:46:48,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 19:46:48,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-19 19:46:48,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:46:48,458 INFO L225 Difference]: With dead ends: 33 [2019-11-19 19:46:48,458 INFO L226 Difference]: Without dead ends: 30 [2019-11-19 19:46:48,460 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 19:46:48,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-19 19:46:48,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-19 19:46:48,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-19 19:46:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-19 19:46:48,504 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2019-11-19 19:46:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:46:48,505 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-19 19:46:48,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 19:46:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-19 19:46:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 19:46:48,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:46:48,506 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:46:48,711 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:46:48,711 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 19:46:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:46:48,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2019-11-19 19:46:48,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:46:48,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [948090093] [2019-11-19 19:46:48,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-19 19:46:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:46:49,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 19:46:49,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:46:49,098 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-19 19:46:49,099 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2019-11-19 19:46:49,100 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 19:46:49,110 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 19:46:49,112 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 19:46:49,112 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2019-11-19 19:46:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:46:49,138 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 19:46:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:46:49,174 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [948090093] [2019-11-19 19:46:49,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:46:49,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-19 19:46:49,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910463919] [2019-11-19 19:46:49,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 19:46:49,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 19:46:49,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 19:46:49,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 19:46:49,178 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states. [2019-11-19 19:46:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:46:49,370 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-19 19:46:49,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 19:46:49,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-19 19:46:49,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:46:49,372 INFO L225 Difference]: With dead ends: 28 [2019-11-19 19:46:49,373 INFO L226 Difference]: Without dead ends: 28 [2019-11-19 19:46:49,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 19:46:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-19 19:46:49,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-19 19:46:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-19 19:46:49,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-19 19:46:49,379 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2019-11-19 19:46:49,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:46:49,380 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-19 19:46:49,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 19:46:49,380 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-19 19:46:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 19:46:49,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:46:49,382 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:46:49,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:46:49,587 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 19:46:49,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:46:49,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2019-11-19 19:46:49,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:46:49,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2061471832] [2019-11-19 19:46:49,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-19 19:46:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:46:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:46:50,409 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-19 19:46:50,410 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 19:46:50,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:46:50,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:46:50 BoogieIcfgContainer [2019-11-19 19:46:50,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 19:46:50,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 19:46:50,641 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 19:46:50,643 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 19:46:50,644 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:47" (3/4) ... [2019-11-19 19:46:50,648 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 19:46:50,704 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 19:46:50,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 19:46:50,706 INFO L168 Benchmark]: Toolchain (without parser) took 4489.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 956.3 MB in the beginning and 923.7 MB in the end (delta: 32.6 MB). Peak memory consumption was 159.0 MB. Max. memory is 11.5 GB. [2019-11-19 19:46:50,707 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:46:50,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -153.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-19 19:46:50,709 INFO L168 Benchmark]: Boogie Preprocessor took 81.09 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: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-11-19 19:46:50,710 INFO L168 Benchmark]: RCFGBuilder took 741.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 11.5 GB. [2019-11-19 19:46:50,711 INFO L168 Benchmark]: TraceAbstraction took 2986.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 923.7 MB in the end (delta: 130.4 MB). Peak memory consumption was 130.4 MB. Max. memory is 11.5 GB. [2019-11-19 19:46:50,711 INFO L168 Benchmark]: Witness Printer took 63.87 ms. Allocated memory is still 1.2 GB. Free memory is still 923.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:46:50,715 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 611.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -153.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.09 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: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 741.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2986.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 923.7 MB in the end (delta: 130.4 MB). Peak memory consumption was 130.4 MB. Max. memory is 11.5 GB. * Witness Printer took 63.87 ms. Allocated memory is still 1.2 GB. Free memory is still 923.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L515] length = 1 VAL [length=1] [L516] int fac = __VERIFIER_nondet_int(); [L517] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L517] fac = 1 VAL [fac=1, length=1] [L518] int *arr = __builtin_alloca (length); [L519] int *arr2 = __builtin_alloca (fac*length); VAL [__builtin_alloca (fac*length)={-1073741825:0}, __builtin_alloca (length)={1073741824:0}, arr={1073741824:0}, arr2={-1073741825:0}, fac=1, length=1] [L520] COND FALSE !(!arr || !arr2) [L521] i=0 VAL [__builtin_alloca (fac*length)={-1073741825:0}, __builtin_alloca (length)={1073741824:0}, arr={1073741824:0}, arr2={-1073741825:0}, fac=1, i=0, length=1] [L521] COND TRUE i