./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 32bit -------------------------------------------------------------------------------- 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-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 13:05:51,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 13:05:51,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 13:05:51,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 13:05:51,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 13:05:51,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 13:05:51,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 13:05:51,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 13:05:51,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 13:05:51,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 13:05:51,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 13:05:51,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 13:05:51,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 13:05:51,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 13:05:51,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 13:05:51,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 13:05:51,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 13:05:51,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 13:05:51,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 13:05:51,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 13:05:51,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 13:05:51,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 13:05:51,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 13:05:51,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 13:05:51,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 13:05:51,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 13:05:51,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 13:05:51,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 13:05:51,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 13:05:51,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 13:05:51,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 13:05:51,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 13:05:51,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 13:05:51,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 13:05:51,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 13:05:51,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 13:05:51,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 13:05:51,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 13:05:51,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 13:05:51,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 13:05:51,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 13:05:51,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-21 13:05:51,940 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 13:05:51,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 13:05:51,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 13:05:51,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 13:05:51,942 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 13:05:51,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 13:05:51,942 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-21 13:05:51,943 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 13:05:51,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 13:05:51,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-21 13:05:51,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 13:05:51,944 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 13:05:51,944 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 13:05:51,944 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-21 13:05:51,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 13:05:51,945 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 13:05:51,945 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 13:05:51,945 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-21 13:05:51,946 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 13:05:51,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 13:05:51,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 13:05:51,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 13:05:51,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 13:05:51,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 13:05:51,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 13:05:51,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 13:05:51,948 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 13:05:51,948 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 13:05:51,948 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 13:05:51,949 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 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 13:05:52,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 13:05:52,296 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 13:05:52,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 13:05:52,301 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 13:05:52,302 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 13:05:52,302 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2019-11-21 13:05:52,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2adb2a48b/46a3079414fe47dfa4abbc4363fa078d/FLAGdb4659f43 [2019-11-21 13:05:52,931 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 13:05:52,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2019-11-21 13:05:52,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2adb2a48b/46a3079414fe47dfa4abbc4363fa078d/FLAGdb4659f43 [2019-11-21 13:05:53,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2adb2a48b/46a3079414fe47dfa4abbc4363fa078d [2019-11-21 13:05:53,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 13:05:53,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 13:05:53,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 13:05:53,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 13:05:53,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 13:05:53,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:05:53" (1/1) ... [2019-11-21 13:05:53,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13413829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:53, skipping insertion in model container [2019-11-21 13:05:53,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:05:53" (1/1) ... [2019-11-21 13:05:53,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 13:05:53,275 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 13:05:53,665 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 13:05:53,665 INFO L969 CHandler]: at location: C: (struct node*) malloc(sizeof(struct node)) [562] [2019-11-21 13:05:53,666 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 13:05:53,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 13:05:53,699 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-21 13:05:53,708 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 13:05:53,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 13:05:53,763 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 13:05:53,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 13:05:53,858 INFO L205 MainTranslator]: Completed translation [2019-11-21 13:05:53,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:53 WrapperNode [2019-11-21 13:05:53,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 13:05:53,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 13:05:53,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 13:05:53,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 13:05:53,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:53" (1/1) ... [2019-11-21 13:05:53,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:53" (1/1) ... [2019-11-21 13:05:53,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:53" (1/1) ... [2019-11-21 13:05:53,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:53" (1/1) ... [2019-11-21 13:05:53,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:53" (1/1) ... [2019-11-21 13:05:53,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:53" (1/1) ... [2019-11-21 13:05:53,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:53" (1/1) ... [2019-11-21 13:05:53,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 13:05:53,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 13:05:53,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 13:05:53,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 13:05:53,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:53" (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 13:05:53,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 13:05:53,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 13:05:53,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 13:05:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 13:05:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-21 13:05:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2019-11-21 13:05:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 13:05:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 13:05:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 13:05:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 13:05:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 13:05:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 13:05:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 13:05:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 13:05:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 13:05:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 13:05:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 13:05:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 13:05:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 13:05:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 13:05:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 13:05:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 13:05:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 13:05:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 13:05:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 13:05:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 13:05:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 13:05:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 13:05:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 13:05:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 13:05:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 13:05:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 13:05:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 13:05:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 13:05:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 13:05:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 13:05:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 13:05:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 13:05:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 13:05:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 13:05:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 13:05:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 13:05:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 13:05:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 13:05:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 13:05:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 13:05:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 13:05:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 13:05:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 13:05:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 13:05:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 13:05:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 13:05:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 13:05:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 13:05:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 13:05:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 13:05:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 13:05:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 13:05:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 13:05:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 13:05:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 13:05:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 13:05:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 13:05:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-21 13:05:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 13:05:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 13:05:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 13:05:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 13:05:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 13:05:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 13:05:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 13:05:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 13:05:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 13:05:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 13:05:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 13:05:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 13:05:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 13:05:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 13:05:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 13:05:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 13:05:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 13:05:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 13:05:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 13:05:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 13:05:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 13:05:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 13:05:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 13:05:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 13:05:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 13:05:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 13:05:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 13:05:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 13:05:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 13:05:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 13:05:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 13:05:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 13:05:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 13:05:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 13:05:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 13:05:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 13:05:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 13:05:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 13:05:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 13:05:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 13:05:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 13:05:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 13:05:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 13:05:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 13:05:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 13:05:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 13:05:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 13:05:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 13:05:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-21 13:05:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2019-11-21 13:05:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 13:05:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 13:05:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-21 13:05:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-21 13:05:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 13:05:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 13:05:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 13:05:54,382 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-21 13:05:54,582 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 13:05:54,582 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-21 13:05:54,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:05:54 BoogieIcfgContainer [2019-11-21 13:05:54,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 13:05:54,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 13:05:54,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 13:05:54,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 13:05:54,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:05:53" (1/3) ... [2019-11-21 13:05:54,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ebb94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:05:54, skipping insertion in model container [2019-11-21 13:05:54,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:53" (2/3) ... [2019-11-21 13:05:54,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ebb94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:05:54, skipping insertion in model container [2019-11-21 13:05:54,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:05:54" (3/3) ... [2019-11-21 13:05:54,594 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2019-11-21 13:05:54,602 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 13:05:54,609 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2019-11-21 13:05:54,621 INFO L249 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2019-11-21 13:05:54,643 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 13:05:54,644 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 13:05:54,644 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 13:05:54,644 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 13:05:54,645 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 13:05:54,645 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 13:05:54,645 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 13:05:54,645 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 13:05:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-11-21 13:05:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-21 13:05:54,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:05:54,669 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:05:54,669 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 13:05:54,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:05:54,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1296135611, now seen corresponding path program 1 times [2019-11-21 13:05:54,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:05:54,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [621104464] [2019-11-21 13:05:54,688 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 13:05:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:05:54,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-21 13:05:54,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:05:55,015 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 13:05:55,016 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:05:55,026 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:05:55,026 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:05:55,027 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 13:05:55,173 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:05:55,174 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 13:05:55,178 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:05:55,211 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-21 13:05:55,213 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 13:05:55,213 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2019-11-21 13:05:55,254 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 13:05:55,255 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:05:57,722 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 13:05:57,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [621104464] [2019-11-21 13:05:57,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 13:05:57,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-21 13:05:57,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589467590] [2019-11-21 13:05:57,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-21 13:05:57,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:05:57,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-21 13:05:57,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=172, Unknown=1, NotChecked=0, Total=210 [2019-11-21 13:05:57,751 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 15 states. [2019-11-21 13:06:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:06:08,651 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2019-11-21 13:06:08,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-21 13:06:08,653 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19 [2019-11-21 13:06:08,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:06:08,660 INFO L225 Difference]: With dead ends: 37 [2019-11-21 13:06:08,661 INFO L226 Difference]: Without dead ends: 31 [2019-11-21 13:06:08,662 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=75, Invalid=304, Unknown=1, NotChecked=0, Total=380 [2019-11-21 13:06:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-21 13:06:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-21 13:06:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-21 13:06:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2019-11-21 13:06:08,701 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2019-11-21 13:06:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:06:08,703 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2019-11-21 13:06:08,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-21 13:06:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2019-11-21 13:06:08,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-21 13:06:08,705 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:06:08,705 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:06:08,907 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:06:08,908 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 13:06:08,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:06:08,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1296135612, now seen corresponding path program 1 times [2019-11-21 13:06:08,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:06:08,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2046171485] [2019-11-21 13:06:08,911 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 13:06:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:06:09,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-21 13:06:09,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:06:09,176 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 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 13:06:09,176 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:06:09,189 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:06:09,195 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 13:06:09,195 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 13:06:09,207 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:06:09,208 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:06:09,208 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-21 13:06:09,392 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:06:09,393 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 13:06:09,394 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:06:09,409 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:06:09,417 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 13:06:09,418 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 13:06:09,431 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:06:09,432 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 13:06:09,433 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:18 [2019-11-21 13:06:09,483 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 13:06:09,483 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:06:09,599 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 13:06:09,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 13:06:09,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 13:06:09,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 13:06:09,747 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 13:06:09,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 13:06:09,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 13:06:09,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 13:06:11,035 WARN L192 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2019-11-21 13:06:11,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 13:06:12,141 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 13:06:12,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2046171485] [2019-11-21 13:06:12,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 13:06:12,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-11-21 13:06:12,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63811543] [2019-11-21 13:06:12,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-21 13:06:12,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:06:12,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-21 13:06:12,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-11-21 13:06:12,146 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2019-11-21 13:06:19,580 WARN L192 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 49 [2019-11-21 13:06:22,053 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-11-21 13:06:27,173 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 13:06:33,784 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 13:06:45,282 WARN L192 SmtUtils]: Spent 5.17 s on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-11-21 13:06:52,504 WARN L192 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-11-21 13:07:17,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:07:17,535 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-11-21 13:07:17,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-21 13:07:17,537 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2019-11-21 13:07:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:07:17,538 INFO L225 Difference]: With dead ends: 27 [2019-11-21 13:07:17,538 INFO L226 Difference]: Without dead ends: 27 [2019-11-21 13:07:17,539 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=86, Invalid=375, Unknown=1, NotChecked=0, Total=462 [2019-11-21 13:07:17,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-21 13:07:17,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-21 13:07:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-21 13:07:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-21 13:07:17,545 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2019-11-21 13:07:17,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:07:17,545 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-21 13:07:17,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-21 13:07:17,546 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-21 13:07:17,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 13:07:17,547 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:07:17,547 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 13:07:17,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:07:17,755 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 13:07:17,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:07:17,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1419991331, now seen corresponding path program 1 times [2019-11-21 13:07:17,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:07:17,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1768108238] [2019-11-21 13:07:17,757 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 13:07:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:07:17,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-21 13:07:17,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:07:17,949 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 13:07:17,949 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:07:17,951 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:07:17,951 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:07:17,951 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 13:07:17,982 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 13:07:17,982 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:07:17,990 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:07:17,991 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 13:07:17,991 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:15 [2019-11-21 13:07:18,014 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 13:07:18,015 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:07:18,022 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:07:18,023 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 13:07:18,023 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:13 [2019-11-21 13:07:18,041 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 13:07:18,042 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:07:18,203 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 13:07:18,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1768108238] [2019-11-21 13:07:18,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:07:18,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-21 13:07:18,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031004718] [2019-11-21 13:07:18,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 13:07:18,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:07:18,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 13:07:18,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-21 13:07:18,206 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2019-11-21 13:07:18,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:07:18,464 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-21 13:07:18,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 13:07:18,464 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2019-11-21 13:07:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:07:18,466 INFO L225 Difference]: With dead ends: 26 [2019-11-21 13:07:18,466 INFO L226 Difference]: Without dead ends: 26 [2019-11-21 13:07:18,467 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-11-21 13:07:18,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-21 13:07:18,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-21 13:07:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-21 13:07:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-21 13:07:18,472 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2019-11-21 13:07:18,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:07:18,473 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-21 13:07:18,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 13:07:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-21 13:07:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 13:07:18,474 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:07:18,474 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 13:07:18,677 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:07:18,677 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 13:07:18,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:07:18,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1419991332, now seen corresponding path program 1 times [2019-11-21 13:07:18,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:07:18,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1066879612] [2019-11-21 13:07:18,680 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 13:07:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:07:18,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-21 13:07:18,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:07:18,856 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 13:07:18,856 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:07:18,861 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:07:18,861 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:07:18,861 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 13:07:18,903 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 13:07:18,903 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:07:18,914 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:07:18,920 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 13:07:18,920 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 13:07:18,929 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:07:18,930 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 13:07:18,930 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2019-11-21 13:07:18,974 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 13:07:18,975 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:07:18,984 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:07:18,988 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 13:07:18,989 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 13:07:18,994 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:07:18,994 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 13:07:18,995 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:31, output treesize:11 [2019-11-21 13:07:19,010 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 13:07:19,011 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:07:19,433 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 13:07:19,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1066879612] [2019-11-21 13:07:19,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:07:19,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-11-21 13:07:19,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269430393] [2019-11-21 13:07:19,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-21 13:07:19,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:07:19,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-21 13:07:19,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-21 13:07:19,436 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2019-11-21 13:07:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:07:19,733 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-11-21 13:07:19,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 13:07:19,734 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2019-11-21 13:07:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:07:19,735 INFO L225 Difference]: With dead ends: 25 [2019-11-21 13:07:19,736 INFO L226 Difference]: Without dead ends: 25 [2019-11-21 13:07:19,736 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 13:07:19,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-21 13:07:19,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-21 13:07:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-21 13:07:19,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-21 13:07:19,741 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2019-11-21 13:07:19,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:07:19,741 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-21 13:07:19,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-21 13:07:19,742 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-21 13:07:19,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-21 13:07:19,743 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:07:19,743 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 13:07:19,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:07:19,947 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 13:07:19,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:07:19,947 INFO L82 PathProgramCache]: Analyzing trace with hash 859638790, now seen corresponding path program 1 times [2019-11-21 13:07:19,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:07:19,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1290483086] [2019-11-21 13:07:19,949 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 13:07:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:07:20,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 13:07:20,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:07:20,265 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 13:07:20,265 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:07:20,375 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 13:07:20,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1290483086] [2019-11-21 13:07:20,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 13:07:20,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2019-11-21 13:07:20,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186189571] [2019-11-21 13:07:20,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 13:07:20,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:07:20,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 13:07:20,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-21 13:07:20,377 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 11 states. [2019-11-21 13:07:20,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:07:20,559 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-21 13:07:20,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 13:07:20,560 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2019-11-21 13:07:20,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:07:20,561 INFO L225 Difference]: With dead ends: 24 [2019-11-21 13:07:20,561 INFO L226 Difference]: Without dead ends: 24 [2019-11-21 13:07:20,562 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 13:07:20,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-21 13:07:20,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-21 13:07:20,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-21 13:07:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-21 13:07:20,566 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 26 [2019-11-21 13:07:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:07:20,567 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-21 13:07:20,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 13:07:20,567 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-21 13:07:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-21 13:07:20,568 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:07:20,568 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 13:07:20,770 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:07:20,771 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 13:07:20,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:07:20,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1479158633, now seen corresponding path program 1 times [2019-11-21 13:07:20,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:07:20,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1206437580] [2019-11-21 13:07:20,773 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 13:07:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 13:07:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 13:07:21,125 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-21 13:07:21,125 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 13:07:21,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:07:21,339 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-21 13:07:21,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:07:21 BoogieIcfgContainer [2019-11-21 13:07:21,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 13:07:21,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 13:07:21,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 13:07:21,352 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 13:07:21,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:05:54" (3/4) ... [2019-11-21 13:07:21,355 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-21 13:07:21,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 13:07:21,357 INFO L168 Benchmark]: Toolchain (without parser) took 88151.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 960.4 MB in the beginning and 844.4 MB in the end (delta: 115.9 MB). Peak memory consumption was 279.0 MB. Max. memory is 11.5 GB. [2019-11-21 13:07:21,357 INFO L168 Benchmark]: CDTParser took 0.33 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 13:07:21,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 74.4 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -86.5 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. [2019-11-21 13:07:21,359 INFO L168 Benchmark]: Boogie Preprocessor took 70.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 13:07:21,359 INFO L168 Benchmark]: RCFGBuilder took 653.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 999.8 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. [2019-11-21 13:07:21,360 INFO L168 Benchmark]: TraceAbstraction took 86764.98 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 88.6 MB). Free memory was 999.8 MB in the beginning and 844.4 MB in the end (delta: 155.3 MB). Peak memory consumption was 243.9 MB. Max. memory is 11.5 GB. [2019-11-21 13:07:21,361 INFO L168 Benchmark]: Witness Printer took 3.51 ms. Allocated memory is still 1.2 GB. Free memory is still 844.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 13:07:21,364 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 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 652.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 74.4 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -86.5 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 653.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 999.8 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 86764.98 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 88.6 MB). Free memory was 999.8 MB in the beginning and 844.4 MB in the end (delta: 155.3 MB). Peak memory consumption was 243.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.51 ms. Allocated memory is still 1.2 GB. Free memory is still 844.4 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) VAL [*s = *(s->next)={0:0}, s={2147483646:0}, s->next={-2147483648:0}] [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: 86.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 77.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 151 SDslu, 343 SDs, 0 SdLazy, 580 SolverSat, 46 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 52.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 29.6s 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, 6.8s 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...