./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/lis_unsafe.i --full-output --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 264dba86 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/lis_unsafe.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-264dba8 [2019-11-21 11:43:42,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 11:43:42,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 11:43:42,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 11:43:42,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 11:43:42,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 11:43:42,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 11:43:42,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 11:43:42,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 11:43:42,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 11:43:42,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 11:43:42,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 11:43:42,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 11:43:42,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 11:43:42,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 11:43:42,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 11:43:42,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 11:43:42,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 11:43:42,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 11:43:42,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 11:43:42,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 11:43:42,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 11:43:42,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 11:43:42,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 11:43:42,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 11:43:42,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 11:43:42,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 11:43:42,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 11:43:42,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 11:43:42,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 11:43:42,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 11:43:42,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 11:43:42,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 11:43:42,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 11:43:42,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 11:43:42,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 11:43:42,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 11:43:42,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 11:43:42,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 11:43:42,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 11:43:42,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 11:43:42,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2019-11-21 11:43:42,645 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 11:43:42,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 11:43:42,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 11:43:42,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 11:43:42,647 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 11:43:42,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 11:43:42,648 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 11:43:42,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 11:43:42,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 11:43:42,648 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 11:43:42,649 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 11:43:42,649 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-21 11:43:42,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 11:43:42,650 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 11:43:42,650 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 11:43:42,650 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 11:43:42,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 11:43:42,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 11:43:42,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 11:43:42,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 11:43:42,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 11:43:42,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 11:43:42,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 11:43:42,652 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 11:43:42,653 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 11:43:42,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 11:43:42,653 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2019-11-21 11:43:42,946 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 11:43:42,964 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 11:43:42,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 11:43:42,970 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 11:43:42,970 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 11:43:42,971 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis_unsafe.i [2019-11-21 11:43:43,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f50cd368/cfbbd215a0c646a295406581f5c005ad/FLAGeaaa9920c [2019-11-21 11:43:43,524 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 11:43:43,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis_unsafe.i [2019-11-21 11:43:43,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f50cd368/cfbbd215a0c646a295406581f5c005ad/FLAGeaaa9920c [2019-11-21 11:43:43,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f50cd368/cfbbd215a0c646a295406581f5c005ad [2019-11-21 11:43:43,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 11:43:43,888 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 11:43:43,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 11:43:43,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 11:43:43,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 11:43:43,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:43:43" (1/1) ... [2019-11-21 11:43:43,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d804259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:43:43, skipping insertion in model container [2019-11-21 11:43:43,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:43:43" (1/1) ... [2019-11-21 11:43:43,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 11:43:43,951 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 11:43:44,359 INFO L966 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-21 11:43:44,360 INFO L969 CHandler]: at location: C: (int*) malloc(sizeof(int) * N) [515] [2019-11-21 11:43:44,360 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:43:44,361 INFO L966 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-21 11:43:44,362 INFO L969 CHandler]: at location: C: (int*) malloc(sizeof(int) * N) [516] [2019-11-21 11:43:44,362 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:43:44,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:43:44,408 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-21 11:43:44,424 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 11:43:44,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:43:44,492 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 11:43:44,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:43:44,619 INFO L205 MainTranslator]: Completed translation [2019-11-21 11:43:44,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:43:44 WrapperNode [2019-11-21 11:43:44,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 11:43:44,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 11:43:44,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 11:43:44,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 11:43:44,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:43:44" (1/1) ... [2019-11-21 11:43:44,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:43:44" (1/1) ... [2019-11-21 11:43:44,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:43:44" (1/1) ... [2019-11-21 11:43:44,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:43:44" (1/1) ... [2019-11-21 11:43:44,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:43:44" (1/1) ... [2019-11-21 11:43:44,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:43:44" (1/1) ... [2019-11-21 11:43:44,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:43:44" (1/1) ... [2019-11-21 11:43:44,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 11:43:44,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 11:43:44,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 11:43:44,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 11:43:44,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:43:44" (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 [2019-11-21 11:43:44,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 11:43:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 11:43:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 11:43:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 11:43:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-21 11:43:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-21 11:43:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-21 11:43:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure lis [2019-11-21 11:43:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 11:43:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 11:43:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 11:43:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 11:43:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 11:43:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 11:43:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 11:43:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 11:43:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 11:43:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 11:43:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 11:43:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 11:43:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 11:43:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 11:43:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 11:43:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 11:43:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 11:43:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 11:43:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 11:43:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-21 11:43:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-21 11:43:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-21 11:43:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 11:43:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 11:43:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 11:43:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 11:43:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 11:43:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 11:43:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 11:43:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 11:43:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 11:43:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 11:43:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 11:43:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 11:43:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 11:43:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 11:43:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 11:43:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 11:43:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 11:43:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 11:43:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 11:43:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 11:43:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 11:43:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 11:43:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 11:43:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 11:43:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 11:43:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 11:43:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 11:43:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 11:43:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 11:43:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 11:43:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 11:43:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 11:43:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 11:43:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 11:43:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 11:43:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 11:43:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 11:43:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 11:43:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 11:43:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 11:43:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 11:43:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 11:43:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 11:43:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 11:43:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 11:43:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 11:43:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 11:43:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 11:43:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 11:43:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 11:43:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 11:43:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 11:43:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 11:43:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 11:43:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 11:43:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 11:43:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 11:43:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 11:43:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 11:43:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 11:43:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 11:43:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 11:43:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 11:43:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 11:43:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 11:43:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 11:43:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 11:43:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 11:43:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 11:43:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 11:43:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 11:43:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 11:43:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 11:43:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 11:43:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 11:43:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 11:43:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 11:43:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 11:43:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 11:43:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 11:43:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 11:43:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 11:43:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 11:43:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 11:43:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 11:43:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 11:43:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-21 11:43:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure lis [2019-11-21 11:43:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 11:43:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-21 11:43:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-21 11:43:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 11:43:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 11:43:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 11:43:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 11:43:45,669 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 11:43:45,669 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-21 11:43:45,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:43:45 BoogieIcfgContainer [2019-11-21 11:43:45,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 11:43:45,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 11:43:45,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 11:43:45,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 11:43:45,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 11:43:43" (1/3) ... [2019-11-21 11:43:45,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6466b8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 11:43:45, skipping insertion in model container [2019-11-21 11:43:45,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:43:44" (2/3) ... [2019-11-21 11:43:45,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6466b8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 11:43:45, skipping insertion in model container [2019-11-21 11:43:45,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:43:45" (3/3) ... [2019-11-21 11:43:45,680 INFO L109 eAbstractionObserver]: Analyzing ICFG lis_unsafe.i [2019-11-21 11:43:45,690 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 11:43:45,698 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2019-11-21 11:43:45,710 INFO L249 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2019-11-21 11:43:45,727 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 11:43:45,727 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 11:43:45,727 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 11:43:45,728 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 11:43:45,728 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 11:43:45,728 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 11:43:45,728 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 11:43:45,729 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 11:43:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2019-11-21 11:43:45,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-21 11:43:45,756 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:43:45,757 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:43:45,758 INFO L410 AbstractCegarLoop]: === Iteration 1 === [lisErr12REQUIRES_VIOLATION, lisErr11REQUIRES_VIOLATION, lisErr10REQUIRES_VIOLATION, lisErr23ASSERT_VIOLATIONMEMORY_FREE, lisErr9REQUIRES_VIOLATION, lisErr8REQUIRES_VIOLATION, lisErr26ASSERT_VIOLATIONMEMORY_FREE, lisErr17REQUIRES_VIOLATION, lisErr25ASSERT_VIOLATIONMEMORY_FREE, lisErr16REQUIRES_VIOLATION, lisErr15REQUIRES_VIOLATION, lisErr14REQUIRES_VIOLATION, lisErr13REQUIRES_VIOLATION, lisErr1REQUIRES_VIOLATION, lisErr0REQUIRES_VIOLATION, lisErr21REQUIRES_VIOLATION, lisErr22ASSERT_VIOLATIONMEMORY_FREE, lisErr27ASSERT_VIOLATIONMEMORY_FREE, lisErr20REQUIRES_VIOLATION, lisErr24ASSERT_VIOLATIONMEMORY_FREE, lisErr19REQUIRES_VIOLATION, lisErr18REQUIRES_VIOLATION, lisErr7REQUIRES_VIOLATION, lisErr6REQUIRES_VIOLATION, lisErr5REQUIRES_VIOLATION, lisErr4REQUIRES_VIOLATION, lisErr3REQUIRES_VIOLATION, lisErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-21 11:43:45,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:43:45,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1727722235, now seen corresponding path program 1 times [2019-11-21 11:43:45,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:43:45,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2032757469] [2019-11-21 11:43:45,777 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 [2019-11-21 11:43:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:43:46,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-21 11:43:46,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:43:46,175 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-21 11:43:46,176 INFO L377 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-21 11:43:46,177 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:43:46,190 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:43:46,191 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. [2019-11-21 11:43:46,192 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-21 11:43:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:43:46,212 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:43:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:43:46,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2032757469] [2019-11-21 11:43:46,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:43:46,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-21 11:43:46,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858634568] [2019-11-21 11:43:46,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 11:43:46,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:43:46,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 11:43:46,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 11:43:46,254 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 3 states. [2019-11-21 11:43:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:43:46,509 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2019-11-21 11:43:46,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 11:43:46,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-21 11:43:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:43:46,523 INFO L225 Difference]: With dead ends: 71 [2019-11-21 11:43:46,523 INFO L226 Difference]: Without dead ends: 68 [2019-11-21 11:43:46,525 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 11:43:46,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-21 11:43:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-21 11:43:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-21 11:43:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2019-11-21 11:43:46,573 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 11 [2019-11-21 11:43:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:43:46,574 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2019-11-21 11:43:46,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 11:43:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2019-11-21 11:43:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-21 11:43:46,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:43:46,576 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:43:46,788 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:43:46,789 INFO L410 AbstractCegarLoop]: === Iteration 2 === [lisErr12REQUIRES_VIOLATION, lisErr11REQUIRES_VIOLATION, lisErr10REQUIRES_VIOLATION, lisErr23ASSERT_VIOLATIONMEMORY_FREE, lisErr9REQUIRES_VIOLATION, lisErr8REQUIRES_VIOLATION, lisErr26ASSERT_VIOLATIONMEMORY_FREE, lisErr17REQUIRES_VIOLATION, lisErr25ASSERT_VIOLATIONMEMORY_FREE, lisErr16REQUIRES_VIOLATION, lisErr15REQUIRES_VIOLATION, lisErr14REQUIRES_VIOLATION, lisErr13REQUIRES_VIOLATION, lisErr1REQUIRES_VIOLATION, lisErr0REQUIRES_VIOLATION, lisErr21REQUIRES_VIOLATION, lisErr22ASSERT_VIOLATIONMEMORY_FREE, lisErr27ASSERT_VIOLATIONMEMORY_FREE, lisErr20REQUIRES_VIOLATION, lisErr24ASSERT_VIOLATIONMEMORY_FREE, lisErr19REQUIRES_VIOLATION, lisErr18REQUIRES_VIOLATION, lisErr7REQUIRES_VIOLATION, lisErr6REQUIRES_VIOLATION, lisErr5REQUIRES_VIOLATION, lisErr4REQUIRES_VIOLATION, lisErr3REQUIRES_VIOLATION, lisErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-21 11:43:46,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:43:46,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1727722236, now seen corresponding path program 1 times [2019-11-21 11:43:46,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:43:46,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [532273901] [2019-11-21 11:43:46,792 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 [2019-11-21 11:43:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:43:47,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-21 11:43:47,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:43:47,050 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_31|], 1=[|v_#valid_47|]} [2019-11-21 11:43:47,059 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 11:43:47,061 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-11-21 11:43:47,062 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:43:47,081 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:43:47,095 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-21 11:43:47,096 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 11:43:47,114 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:43:47,115 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 11:43:47,115 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:21 [2019-11-21 11:43:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:43:47,150 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:43:47,247 INFO L392 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2019-11-21 11:43:47,256 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-21 11:43:47,256 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:43:47,273 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:43:47,277 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-21 11:43:47,278 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 11:43:47,287 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:43:47,288 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:43:47,289 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:5 [2019-11-21 11:43:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:43:47,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [532273901] [2019-11-21 11:43:47,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:43:47,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-21 11:43:47,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937895661] [2019-11-21 11:43:47,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 11:43:47,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:43:47,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 11:43:47,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-21 11:43:47,368 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 8 states. [2019-11-21 11:43:48,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:43:48,561 INFO L93 Difference]: Finished difference Result 166 states and 186 transitions. [2019-11-21 11:43:48,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 11:43:48,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-21 11:43:48,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:43:48,565 INFO L225 Difference]: With dead ends: 166 [2019-11-21 11:43:48,566 INFO L226 Difference]: Without dead ends: 166 [2019-11-21 11:43:48,567 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-21 11:43:48,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-11-21 11:43:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 127. [2019-11-21 11:43:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-21 11:43:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 177 transitions. [2019-11-21 11:43:48,588 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 177 transitions. Word has length 11 [2019-11-21 11:43:48,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:43:48,588 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 177 transitions. [2019-11-21 11:43:48,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 11:43:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 177 transitions. [2019-11-21 11:43:48,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-21 11:43:48,590 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:43:48,590 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:43:48,793 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:43:48,794 INFO L410 AbstractCegarLoop]: === Iteration 3 === [lisErr12REQUIRES_VIOLATION, lisErr11REQUIRES_VIOLATION, lisErr10REQUIRES_VIOLATION, lisErr23ASSERT_VIOLATIONMEMORY_FREE, lisErr9REQUIRES_VIOLATION, lisErr8REQUIRES_VIOLATION, lisErr26ASSERT_VIOLATIONMEMORY_FREE, lisErr17REQUIRES_VIOLATION, lisErr25ASSERT_VIOLATIONMEMORY_FREE, lisErr16REQUIRES_VIOLATION, lisErr15REQUIRES_VIOLATION, lisErr14REQUIRES_VIOLATION, lisErr13REQUIRES_VIOLATION, lisErr1REQUIRES_VIOLATION, lisErr0REQUIRES_VIOLATION, lisErr21REQUIRES_VIOLATION, lisErr22ASSERT_VIOLATIONMEMORY_FREE, lisErr27ASSERT_VIOLATIONMEMORY_FREE, lisErr20REQUIRES_VIOLATION, lisErr24ASSERT_VIOLATIONMEMORY_FREE, lisErr19REQUIRES_VIOLATION, lisErr18REQUIRES_VIOLATION, lisErr7REQUIRES_VIOLATION, lisErr6REQUIRES_VIOLATION, lisErr5REQUIRES_VIOLATION, lisErr4REQUIRES_VIOLATION, lisErr3REQUIRES_VIOLATION, lisErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-21 11:43:48,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:43:48,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1729569278, now seen corresponding path program 1 times [2019-11-21 11:43:48,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:43:48,797 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [328650711] [2019-11-21 11:43:48,797 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 [2019-11-21 11:43:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 11:43:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 11:43:49,063 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-21 11:43:49,064 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 11:43:49,267 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:43:49,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 11:43:49 BoogieIcfgContainer [2019-11-21 11:43:49,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 11:43:49,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 11:43:49,299 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 11:43:49,299 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 11:43:49,300 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:43:45" (3/4) ... [2019-11-21 11:43:49,303 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-21 11:43:49,354 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-21 11:43:49,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 11:43:49,357 INFO L168 Benchmark]: Toolchain (without parser) took 5468.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 959.0 MB in the beginning and 871.9 MB in the end (delta: 87.2 MB). Peak memory consumption was 231.9 MB. Max. memory is 11.5 GB. [2019-11-21 11:43:49,362 INFO L168 Benchmark]: CDTParser took 0.58 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. [2019-11-21 11:43:49,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -165.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-11-21 11:43:49,364 INFO L168 Benchmark]: Boogie Preprocessor took 74.24 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-21 11:43:49,366 INFO L168 Benchmark]: RCFGBuilder took 974.85 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: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 11.5 GB. [2019-11-21 11:43:49,370 INFO L168 Benchmark]: TraceAbstraction took 3625.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 871.9 MB in the end (delta: 182.8 MB). Peak memory consumption was 182.8 MB. Max. memory is 11.5 GB. [2019-11-21 11:43:49,370 INFO L168 Benchmark]: Witness Printer took 55.89 ms. Allocated memory is still 1.2 GB. Free memory is still 871.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 11:43:49,379 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 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 732.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -165.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 74.24 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 974.85 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: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3625.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 871.9 MB in the end (delta: 182.8 MB). Peak memory consumption was 182.8 MB. Max. memory is 11.5 GB. * Witness Printer took 55.89 ms. Allocated memory is still 1.2 GB. Free memory is still 871.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 518]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L531] int *a; [L532] int N = __VERIFIER_nondet_int(); [L533] COND FALSE !(N < 1) VAL [N=1073741824] [L535] CALL lis(a, N) VAL [\old(N)=1073741824, a={0:0}] [L514] int *best, *prev, i, j, max = 0; [L515] best = (int*) malloc(sizeof(int) * N) [L516] prev = (int*) malloc(sizeof(int) * N) [L517] i = 0 VAL [\old(N)=1073741824, a={0:0}, a={0:0}, best={-2:0}, i=0, malloc(sizeof(int) * N)={1:0}, malloc(sizeof(int) * N)={-2:0}, max=0, N=1073741824, prev={1:0}] [L517] COND TRUE i < N VAL [\old(N)=1073741824, a={0:0}, a={0:0}, best={-2:0}, i=0, malloc(sizeof(int) * N)={1:0}, malloc(sizeof(int) * N)={-2:0}, max=0, N=1073741824, prev={1:0}] [L518] best[i] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 94 locations, 29 error locations. Result: UNSAFE, OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 191 SDslu, 269 SDs, 0 SdLazy, 186 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 39 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 2 QuantifiedInterpolants, 1820 SizeOfPredicates, 10 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...