./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.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/list-ext3-properties/sll_shallow_copy-2.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 cf7af2f20e563d03f4a81a8dac054ded849cb34c --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-264dba8 [2019-11-21 11:50:13,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 11:50:13,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 11:50:13,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 11:50:13,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 11:50:13,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 11:50:13,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 11:50:13,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 11:50:13,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 11:50:13,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 11:50:13,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 11:50:13,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 11:50:13,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 11:50:13,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 11:50:13,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 11:50:13,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 11:50:13,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 11:50:13,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 11:50:13,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 11:50:13,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 11:50:13,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 11:50:13,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 11:50:13,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 11:50:13,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 11:50:13,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 11:50:13,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 11:50:13,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 11:50:13,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 11:50:13,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 11:50:13,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 11:50:13,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 11:50:13,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 11:50:13,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 11:50:13,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 11:50:13,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 11:50:13,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 11:50:13,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 11:50:13,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 11:50:13,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 11:50:13,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 11:50:13,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 11:50:13,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2019-11-21 11:50:13,743 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 11:50:13,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 11:50:13,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 11:50:13,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 11:50:13,747 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 11:50:13,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 11:50:13,747 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 11:50:13,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 11:50:13,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 11:50:13,748 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 11:50:13,748 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 11:50:13,748 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-21 11:50:13,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 11:50:13,748 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 11:50:13,749 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 11:50:13,749 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 11:50:13,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 11:50:13,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 11:50:13,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 11:50:13,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 11:50:13,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 11:50:13,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 11:50:13,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 11:50:13,751 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 11:50:13,751 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 11:50:13,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 11:50:13,751 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 -> cf7af2f20e563d03f4a81a8dac054ded849cb34c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2019-11-21 11:50:14,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 11:50:14,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 11:50:14,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 11:50:14,089 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 11:50:14,090 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 11:50:14,091 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2019-11-21 11:50:14,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/815869c3a/0e664d7643894fefaaa21ed1a36d289d/FLAG3ffee48a4 [2019-11-21 11:50:14,721 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 11:50:14,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2019-11-21 11:50:14,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/815869c3a/0e664d7643894fefaaa21ed1a36d289d/FLAG3ffee48a4 [2019-11-21 11:50:15,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/815869c3a/0e664d7643894fefaaa21ed1a36d289d [2019-11-21 11:50:15,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 11:50:15,018 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 11:50:15,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 11:50:15,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 11:50:15,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 11:50:15,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:50:15" (1/1) ... [2019-11-21 11:50:15,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c7b1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:50:15, skipping insertion in model container [2019-11-21 11:50:15,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:50:15" (1/1) ... [2019-11-21 11:50:15,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 11:50:15,097 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 11:50:15,507 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 11:50:15,508 INFO L969 CHandler]: at location: C: (struct node*) malloc(sizeof(struct node)) [562] [2019-11-21 11:50:15,508 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:50:15,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:50:15,533 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-21 11:50:15,541 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 11:50:15,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:50:15,572 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 11:50:15,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:50:15,696 INFO L205 MainTranslator]: Completed translation [2019-11-21 11:50:15,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:50:15 WrapperNode [2019-11-21 11:50:15,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 11:50:15,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 11:50:15,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 11:50:15,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 11:50:15,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:50:15" (1/1) ... [2019-11-21 11:50:15,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:50:15" (1/1) ... [2019-11-21 11:50:15,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:50:15" (1/1) ... [2019-11-21 11:50:15,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:50:15" (1/1) ... [2019-11-21 11:50:15,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:50:15" (1/1) ... [2019-11-21 11:50:15,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:50:15" (1/1) ... [2019-11-21 11:50:15,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:50:15" (1/1) ... [2019-11-21 11:50:15,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 11:50:15,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 11:50:15,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 11:50:15,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 11:50:15,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:50:15" (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 11:50:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 11:50:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 11:50:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 11:50:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 11:50:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-21 11:50:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2019-11-21 11:50:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 11:50:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 11:50:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 11:50:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 11:50:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 11:50:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 11:50:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 11:50:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 11:50:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 11:50:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 11:50:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 11:50:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 11:50:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 11:50:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 11:50:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 11:50:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 11:50:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 11:50:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 11:50:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 11:50:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 11:50:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 11:50:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 11:50:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 11:50:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 11:50:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 11:50:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 11:50:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 11:50:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 11:50:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 11:50:15,824 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 11:50:15,824 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 11:50:15,824 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 11:50:15,824 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 11:50:15,825 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 11:50:15,825 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 11:50:15,825 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 11:50:15,825 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 11:50:15,825 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 11:50:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 11:50:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 11:50:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 11:50:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 11:50:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 11:50:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 11:50:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 11:50:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 11:50:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 11:50:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 11:50:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 11:50:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 11:50:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 11:50:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 11:50:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 11:50:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 11:50:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 11:50:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 11:50:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 11:50:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-21 11:50:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 11:50:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 11:50:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 11:50:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 11:50:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 11:50:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 11:50:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 11:50:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 11:50:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 11:50:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 11:50:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 11:50:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 11:50:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 11:50:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 11:50:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 11:50:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 11:50:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 11:50:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 11:50:15,835 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 11:50:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 11:50:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 11:50:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 11:50:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 11:50:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 11:50:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 11:50:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 11:50:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 11:50:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 11:50:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 11:50:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 11:50:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 11:50:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 11:50:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 11:50:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 11:50:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 11:50:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 11:50:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 11:50:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 11:50:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 11:50:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 11:50:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 11:50:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 11:50:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 11:50:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 11:50:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 11:50:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 11:50:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 11:50:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 11:50:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-21 11:50:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2019-11-21 11:50:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 11:50:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 11:50:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-21 11:50:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-21 11:50:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 11:50:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 11:50:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 11:50:16,289 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-21 11:50:16,457 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 11:50:16,457 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-21 11:50:16,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:50:16 BoogieIcfgContainer [2019-11-21 11:50:16,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 11:50:16,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 11:50:16,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 11:50:16,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 11:50:16,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 11:50:15" (1/3) ... [2019-11-21 11:50:16,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e2427e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 11:50:16, skipping insertion in model container [2019-11-21 11:50:16,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:50:15" (2/3) ... [2019-11-21 11:50:16,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e2427e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 11:50:16, skipping insertion in model container [2019-11-21 11:50:16,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:50:16" (3/3) ... [2019-11-21 11:50:16,474 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2019-11-21 11:50:16,485 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 11:50:16,492 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2019-11-21 11:50:16,501 INFO L249 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2019-11-21 11:50:16,519 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 11:50:16,520 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 11:50:16,520 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 11:50:16,521 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 11:50:16,521 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 11:50:16,521 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 11:50:16,522 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 11:50:16,522 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 11:50:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-11-21 11:50:16,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-21 11:50:16,549 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:50:16,550 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:50:16,551 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-21 11:50:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:50:16,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1296135611, now seen corresponding path program 1 times [2019-11-21 11:50:16,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:50:16,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1071672440] [2019-11-21 11:50:16,570 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 11:50:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:50:16,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-21 11:50:16,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:50:16,904 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 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:50:16,905 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:50:16,918 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:50:16,918 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:50:16,919 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 11:50:17,053 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:50:17,054 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2019-11-21 11:50:17,058 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:50:17,096 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-21 11:50:17,097 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 11:50:17,098 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2019-11-21 11:50:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:50:17,144 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:50:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:50:19,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1071672440] [2019-11-21 11:50:19,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 11:50:19,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-21 11:50:19,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820676206] [2019-11-21 11:50:19,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-21 11:50:19,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:50:19,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-21 11:50:19,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2019-11-21 11:50:19,707 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 15 states. [2019-11-21 11:50:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:50:30,616 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2019-11-21 11:50:30,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-21 11:50:30,618 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19 [2019-11-21 11:50:30,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:50:30,627 INFO L225 Difference]: With dead ends: 37 [2019-11-21 11:50:30,627 INFO L226 Difference]: Without dead ends: 31 [2019-11-21 11:50:30,630 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2019-11-21 11:50:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-21 11:50:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-21 11:50:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-21 11:50:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2019-11-21 11:50:30,667 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2019-11-21 11:50:30,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:50:30,669 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2019-11-21 11:50:30,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-21 11:50:30,669 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2019-11-21 11:50:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-21 11:50:30,671 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:50:30,671 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:50:30,875 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:50:30,876 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-21 11:50:30,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:50:30,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1296135612, now seen corresponding path program 1 times [2019-11-21 11:50:30,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:50:30,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [221532568] [2019-11-21 11:50:30,879 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 11:50:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:50:31,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-21 11:50:31,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:50:31,104 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 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:50:31,104 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:50:31,118 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:50:31,123 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 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:50:31,123 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 11:50:31,135 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:50:31,135 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:50:31,136 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-21 11:50:31,305 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:50:31,306 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-21 11:50:31,308 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:50:31,322 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:50:31,330 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-11-21 11:50:31,331 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 11:50:31,342 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:50:31,343 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 11:50:31,344 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:18 [2019-11-21 11:50:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:50:31,392 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:50:31,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 11:50:31,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:50:31,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 11:50:31,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:50:31,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:50:31,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 11:50:31,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:50:31,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:50:31,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:50:32,974 WARN L192 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2019-11-21 11:50:32,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:50:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:50:34,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [221532568] [2019-11-21 11:50:34,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 11:50:34,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-11-21 11:50:34,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369406449] [2019-11-21 11:50:34,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-21 11:50:34,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:50:34,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-21 11:50:34,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-11-21 11:50:34,237 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2019-11-21 11:50:41,419 WARN L192 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-11-21 11:50:49,182 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-11-21 11:50:53,294 WARN L192 SmtUtils]: Spent 2.45 s on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 11:51:02,979 WARN L192 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 11:51:15,048 WARN L192 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-11-21 11:51:18,895 WARN L192 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-11-21 11:51:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:51:43,365 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-11-21 11:51:43,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 11:51:43,366 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2019-11-21 11:51:43,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:51:43,367 INFO L225 Difference]: With dead ends: 27 [2019-11-21 11:51:43,367 INFO L226 Difference]: Without dead ends: 27 [2019-11-21 11:51:43,368 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=86, Invalid=374, Unknown=2, NotChecked=0, Total=462 [2019-11-21 11:51:43,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-21 11:51:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-21 11:51:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-21 11:51:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-21 11:51:43,374 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2019-11-21 11:51:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:51:43,374 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-21 11:51:43,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-21 11:51:43,375 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-21 11:51:43,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 11:51:43,376 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:51:43,376 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:51:43,576 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:51:43,577 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-21 11:51:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:51:43,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1419991331, now seen corresponding path program 1 times [2019-11-21 11:51:43,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:51:43,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1397720885] [2019-11-21 11:51:43,580 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 11:51:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:51:43,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-21 11:51:43,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:51:43,781 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 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:51:43,782 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:51:43,786 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:51:43,786 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:51:43,787 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 11:51:43,812 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-21 11:51:43,812 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:51:43,821 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:51:43,822 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:51:43,822 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:15 [2019-11-21 11:51:43,845 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-11-21 11:51:43,846 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:51:43,851 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:51:43,852 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 11:51:43,852 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:13 [2019-11-21 11:51:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-21 11:51:43,872 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:51:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-21 11:51:44,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1397720885] [2019-11-21 11:51:44,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:51:44,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-21 11:51:44,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073573148] [2019-11-21 11:51:44,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 11:51:44,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:51:44,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 11:51:44,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-21 11:51:44,056 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2019-11-21 11:51:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:51:44,265 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-21 11:51:44,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 11:51:44,266 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2019-11-21 11:51:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:51:44,267 INFO L225 Difference]: With dead ends: 26 [2019-11-21 11:51:44,268 INFO L226 Difference]: Without dead ends: 26 [2019-11-21 11:51:44,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-11-21 11:51:44,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-21 11:51:44,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-21 11:51:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-21 11:51:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-21 11:51:44,273 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2019-11-21 11:51:44,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:51:44,273 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-21 11:51:44,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 11:51:44,273 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-21 11:51:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 11:51:44,274 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:51:44,274 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:51:44,475 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:51:44,475 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-21 11:51:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:51:44,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1419991332, now seen corresponding path program 1 times [2019-11-21 11:51:44,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:51:44,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [50560955] [2019-11-21 11:51:44,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:51:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:51:44,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-21 11:51:44,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:51:44,655 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 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:51:44,656 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:51:44,662 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:51:44,662 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:51:44,663 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 11:51:44,720 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-21 11:51:44,720 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:51:44,733 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:51:44,738 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-21 11:51:44,738 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 11:51:44,748 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:51:44,748 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:51:44,749 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2019-11-21 11:51:44,772 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-11-21 11:51:44,773 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:51:44,784 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:51:44,787 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-21 11:51:44,787 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 11:51:44,792 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:51:44,792 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:51:44,793 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:31, output treesize:11 [2019-11-21 11:51:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-21 11:51:44,819 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:51:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-21 11:51:45,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [50560955] [2019-11-21 11:51:45,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:51:45,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-11-21 11:51:45,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329941226] [2019-11-21 11:51:45,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-21 11:51:45,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:51:45,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-21 11:51:45,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-21 11:51:45,238 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2019-11-21 11:51:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:51:45,549 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-11-21 11:51:45,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 11:51:45,552 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2019-11-21 11:51:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:51:45,553 INFO L225 Difference]: With dead ends: 25 [2019-11-21 11:51:45,553 INFO L226 Difference]: Without dead ends: 25 [2019-11-21 11:51:45,553 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-11-21 11:51:45,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-21 11:51:45,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-21 11:51:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-21 11:51:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-21 11:51:45,557 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2019-11-21 11:51:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:51:45,558 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-21 11:51:45,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-21 11:51:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-21 11:51:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-21 11:51:45,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:51:45,559 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:51:45,762 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:51:45,763 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-21 11:51:45,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:51:45,763 INFO L82 PathProgramCache]: Analyzing trace with hash 859638790, now seen corresponding path program 1 times [2019-11-21 11:51:45,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:51:45,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [224057118] [2019-11-21 11:51:45,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:51:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:51:45,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 11:51:45,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:51:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-21 11:51:46,024 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:51:46,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-21 11:51:46,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [224057118] [2019-11-21 11:51:46,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 11:51:46,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2019-11-21 11:51:46,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379712159] [2019-11-21 11:51:46,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 11:51:46,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:51:46,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 11:51:46,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-21 11:51:46,184 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 11 states. [2019-11-21 11:51:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:51:46,349 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-21 11:51:46,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 11:51:46,350 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2019-11-21 11:51:46,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:51:46,352 INFO L225 Difference]: With dead ends: 24 [2019-11-21 11:51:46,352 INFO L226 Difference]: Without dead ends: 24 [2019-11-21 11:51:46,352 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-21 11:51:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-21 11:51:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-21 11:51:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-21 11:51:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-21 11:51:46,357 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 26 [2019-11-21 11:51:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:51:46,357 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-21 11:51:46,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 11:51:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-21 11:51:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-21 11:51:46,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:51:46,358 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:51:46,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:51:46,559 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-21 11:51:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:51:46,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1479158633, now seen corresponding path program 1 times [2019-11-21 11:51:46,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:51:46,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1896072211] [2019-11-21 11:51:46,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:51:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 11:51:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 11:51:46,903 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-21 11:51:46,904 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 11:51:47,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:51:47,118 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-21 11:51:47,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 11:51:47 BoogieIcfgContainer [2019-11-21 11:51:47,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 11:51:47,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 11:51:47,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 11:51:47,139 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 11:51:47,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:50:16" (3/4) ... [2019-11-21 11:51:47,145 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-21 11:51:47,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 11:51:47,155 INFO L168 Benchmark]: Toolchain (without parser) took 92131.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 196.1 MB). Free memory was 959.0 MB in the beginning and 870.7 MB in the end (delta: 88.4 MB). Peak memory consumption was 284.4 MB. Max. memory is 11.5 GB. [2019-11-21 11:51:47,156 INFO L168 Benchmark]: CDTParser took 0.22 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 11:51:47,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -135.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-11-21 11:51:47,158 INFO L168 Benchmark]: Boogie Preprocessor took 60.30 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 11:51:47,158 INFO L168 Benchmark]: RCFGBuilder took 700.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 11.5 GB. [2019-11-21 11:51:47,160 INFO L168 Benchmark]: TraceAbstraction took 90673.11 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.0 GB in the beginning and 870.7 MB in the end (delta: 177.9 MB). Peak memory consumption was 253.9 MB. Max. memory is 11.5 GB. [2019-11-21 11:51:47,162 INFO L168 Benchmark]: Witness Printer took 6.69 ms. Allocated memory is still 1.2 GB. Free memory is still 870.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 11:51:47,170 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 678.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -135.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.30 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 700.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 90673.11 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.0 GB in the beginning and 870.7 MB in the end (delta: 177.9 MB). Peak memory consumption was 253.9 MB. Max. memory is 11.5 GB. * Witness Printer took 6.69 ms. Allocated memory is still 1.2 GB. Free memory is still 870.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={2147483646:0}, temp={2147483646:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={2147483646:0}, temp={2147483646:0}] [L566] return temp; VAL [\result={2147483646:0}, malloc(sizeof(struct node))={2147483646:0}, temp={2147483646:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={2147483646:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L566] return temp; VAL [\result={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={-2147483648:0}, s={2147483646:0}] [L570] s->next = alloc_node() VAL [alloc_node()={-2147483648:0}, s={2147483646:0}] [L571] EXPR s->next VAL [s={2147483646:0}, s->next={-2147483648:0}] [L571] *s = *(s->next) [L572] free(s) VAL [s={2147483646:0}] [L572] free(s) VAL [s={2147483646:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={2147483646:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 12 error locations. Result: UNSAFE, OverallTime: 90.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 80.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 150 SDslu, 345 SDs, 0 SdLazy, 571 SolverSat, 45 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 63.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 22.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 206 ConstructedInterpolants, 37 QuantifiedInterpolants, 33512 SizeOfPredicates, 38 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 26/50 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...