./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety-realloc/array-realloc-3.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/array-memsafety-realloc/array-realloc-3.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 c5e00b9cd3876aa8df4263099f6b8339445d38f8 --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 13:27:07,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 13:27:07,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 13:27:07,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 13:27:07,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 13:27:07,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 13:27:07,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 13:27:07,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 13:27:07,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 13:27:07,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 13:27:07,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 13:27:07,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 13:27:07,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 13:27:07,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 13:27:07,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 13:27:07,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 13:27:07,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 13:27:07,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 13:27:07,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 13:27:07,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 13:27:08,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 13:27:08,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 13:27:08,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 13:27:08,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 13:27:08,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 13:27:08,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 13:27:08,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 13:27:08,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 13:27:08,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 13:27:08,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 13:27:08,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 13:27:08,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 13:27:08,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 13:27:08,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 13:27:08,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 13:27:08,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 13:27:08,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 13:27:08,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 13:27:08,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 13:27:08,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 13:27:08,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 13:27:08,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-21 13:27:08,058 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 13:27:08,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 13:27:08,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 13:27:08,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 13:27:08,061 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 13:27:08,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 13:27:08,061 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-21 13:27:08,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 13:27:08,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 13:27:08,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-21 13:27:08,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 13:27:08,064 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 13:27:08,064 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 13:27:08,065 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-21 13:27:08,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 13:27:08,065 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 13:27:08,066 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 13:27:08,066 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-21 13:27:08,066 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 13:27:08,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 13:27:08,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 13:27:08,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 13:27:08,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 13:27:08,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 13:27:08,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 13:27:08,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 13:27:08,069 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 13:27:08,069 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 13:27:08,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 13:27:08,069 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 -> c5e00b9cd3876aa8df4263099f6b8339445d38f8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2019-11-21 13:27:08,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 13:27:08,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 13:27:08,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 13:27:08,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 13:27:08,413 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 13:27:08,413 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety-realloc/array-realloc-3.i [2019-11-21 13:27:08,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f03420ee/9a1ab27901914df9a5decd92687fd33d/FLAG20724d260 [2019-11-21 13:27:09,012 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 13:27:09,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety-realloc/array-realloc-3.i [2019-11-21 13:27:09,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f03420ee/9a1ab27901914df9a5decd92687fd33d/FLAG20724d260 [2019-11-21 13:27:09,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f03420ee/9a1ab27901914df9a5decd92687fd33d [2019-11-21 13:27:09,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 13:27:09,309 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 13:27:09,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 13:27:09,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 13:27:09,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 13:27:09,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:27:09" (1/1) ... [2019-11-21 13:27:09,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1cb90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:09, skipping insertion in model container [2019-11-21 13:27:09,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:27:09" (1/1) ... [2019-11-21 13:27:09,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 13:27:09,365 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 13:27:09,795 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 13:27:09,796 INFO L969 CHandler]: at location: C: (int *)arg [515] [2019-11-21 13:27:09,797 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 13:27:09,817 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 13:27:09,818 INFO L969 CHandler]: at location: C: (int *)malloc(sizeof(int)) [530] [2019-11-21 13:27:09,818 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 13:27:09,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 13:27:09,836 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-21 13:27:09,856 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 13:27:09,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 13:27:09,917 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 13:27:09,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 13:27:10,054 INFO L205 MainTranslator]: Completed translation [2019-11-21 13:27:10,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:10 WrapperNode [2019-11-21 13:27:10,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 13:27:10,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 13:27:10,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 13:27:10,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 13:27:10,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:10" (1/1) ... [2019-11-21 13:27:10,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:10" (1/1) ... [2019-11-21 13:27:10,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:10" (1/1) ... [2019-11-21 13:27:10,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:10" (1/1) ... [2019-11-21 13:27:10,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:10" (1/1) ... [2019-11-21 13:27:10,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:10" (1/1) ... [2019-11-21 13:27:10,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:10" (1/1) ... [2019-11-21 13:27:10,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 13:27:10,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 13:27:10,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 13:27:10,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 13:27:10,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:10" (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 13:27:10,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 13:27:10,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 13:27:10,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 13:27:10,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 13:27:10,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-21 13:27:10,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-21 13:27:10,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-21 13:27:10,182 INFO L138 BoogieDeclarations]: Found implementation of procedure expandArray [2019-11-21 13:27:10,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 13:27:10,183 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2019-11-21 13:27:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 13:27:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 13:27:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 13:27:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 13:27:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 13:27:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 13:27:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 13:27:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 13:27:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 13:27:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 13:27:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 13:27:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 13:27:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 13:27:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 13:27:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 13:27:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 13:27:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 13:27:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 13:27:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-21 13:27:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-21 13:27:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-21 13:27:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 13:27:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 13:27:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 13:27:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 13:27:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 13:27:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 13:27:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 13:27:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 13:27:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 13:27:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 13:27:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 13:27:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 13:27:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 13:27:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 13:27:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 13:27:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 13:27:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 13:27:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 13:27:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 13:27:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 13:27:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 13:27:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 13:27:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 13:27:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 13:27:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 13:27:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 13:27:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 13:27:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 13:27:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 13:27:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 13:27:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 13:27:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 13:27:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 13:27:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 13:27:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 13:27:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 13:27:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 13:27:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 13:27:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 13:27:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 13:27:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 13:27:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 13:27:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 13:27:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 13:27:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 13:27:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 13:27:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 13:27:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 13:27:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 13:27:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 13:27:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 13:27:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 13:27:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 13:27:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 13:27:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 13:27:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 13:27:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 13:27:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 13:27:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 13:27:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 13:27:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 13:27:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 13:27:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 13:27:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 13:27:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 13:27:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 13:27:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 13:27:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 13:27:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 13:27:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 13:27:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 13:27:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 13:27:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 13:27:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 13:27:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 13:27:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 13:27:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 13:27:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 13:27:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 13:27:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 13:27:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 13:27:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 13:27:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 13:27:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 13:27:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 13:27:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 13:27:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-21 13:27:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure expandArray [2019-11-21 13:27:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2019-11-21 13:27:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-21 13:27:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 13:27:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 13:27:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 13:27:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 13:27:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-21 13:27:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 13:27:10,717 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 13:27:10,717 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-21 13:27:10,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:27:10 BoogieIcfgContainer [2019-11-21 13:27:10,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 13:27:10,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 13:27:10,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 13:27:10,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 13:27:10,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:27:09" (1/3) ... [2019-11-21 13:27:10,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c406488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:27:10, skipping insertion in model container [2019-11-21 13:27:10,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:10" (2/3) ... [2019-11-21 13:27:10,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c406488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:27:10, skipping insertion in model container [2019-11-21 13:27:10,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:27:10" (3/3) ... [2019-11-21 13:27:10,727 INFO L109 eAbstractionObserver]: Analyzing ICFG array-realloc-3.i [2019-11-21 13:27:10,737 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 13:27:10,745 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-21 13:27:10,757 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-21 13:27:10,778 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 13:27:10,778 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 13:27:10,778 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 13:27:10,778 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 13:27:10,780 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 13:27:10,780 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 13:27:10,780 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 13:27:10,780 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 13:27:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-21 13:27:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-21 13:27:10,800 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:27:10,801 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:27:10,802 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, expandArrayErr1REQUIRES_VIOLATION, expandArrayErr0REQUIRES_VIOLATION]=== [2019-11-21 13:27:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:27:10,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2063741083, now seen corresponding path program 1 times [2019-11-21 13:27:10,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:27:10,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [748355960] [2019-11-21 13:27:10,820 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 13:27:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:27:11,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-21 13:27:11,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:27:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:11,084 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:27:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:11,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [748355960] [2019-11-21 13:27:11,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:27:11,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-21 13:27:11,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235665425] [2019-11-21 13:27:11,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 13:27:11,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:27:11,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 13:27:11,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 13:27:11,127 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2019-11-21 13:27:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:27:11,213 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-11-21 13:27:11,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 13:27:11,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-21 13:27:11,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:27:11,223 INFO L225 Difference]: With dead ends: 35 [2019-11-21 13:27:11,223 INFO L226 Difference]: Without dead ends: 31 [2019-11-21 13:27:11,228 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 13:27:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-21 13:27:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-11-21 13:27:11,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-21 13:27:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-11-21 13:27:11,293 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 8 [2019-11-21 13:27:11,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:27:11,293 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-11-21 13:27:11,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 13:27:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-11-21 13:27:11,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-21 13:27:11,294 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:27:11,295 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:27:11,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:27:11,500 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, expandArrayErr1REQUIRES_VIOLATION, expandArrayErr0REQUIRES_VIOLATION]=== [2019-11-21 13:27:11,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:27:11,501 INFO L82 PathProgramCache]: Analyzing trace with hash -448535036, now seen corresponding path program 1 times [2019-11-21 13:27:11,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:27:11,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [156194059] [2019-11-21 13:27:11,502 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 13:27:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:27:11,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-21 13:27:11,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:27:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:11,704 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:27:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:11,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [156194059] [2019-11-21 13:27:11,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:27:11,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-21 13:27:11,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711178833] [2019-11-21 13:27:11,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 13:27:11,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:27:11,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 13:27:11,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 13:27:11,717 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 3 states. [2019-11-21 13:27:11,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:27:11,722 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-11-21 13:27:11,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 13:27:11,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-21 13:27:11,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:27:11,724 INFO L225 Difference]: With dead ends: 26 [2019-11-21 13:27:11,724 INFO L226 Difference]: Without dead ends: 26 [2019-11-21 13:27:11,725 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 13:27:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-21 13:27:11,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-21 13:27:11,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-21 13:27:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-11-21 13:27:11,730 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 9 [2019-11-21 13:27:11,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:27:11,730 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-11-21 13:27:11,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 13:27:11,730 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-11-21 13:27:11,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-21 13:27:11,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:27:11,731 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:27:11,934 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:27:11,934 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, expandArrayErr1REQUIRES_VIOLATION, expandArrayErr0REQUIRES_VIOLATION]=== [2019-11-21 13:27:11,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:27:11,935 INFO L82 PathProgramCache]: Analyzing trace with hash 440033009, now seen corresponding path program 1 times [2019-11-21 13:27:11,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:27:11,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [846466779] [2019-11-21 13:27:11,937 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 13:27:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:27:12,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-21 13:27:12,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:27:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:12,266 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:27:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:12,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [846466779] [2019-11-21 13:27:12,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:27:12,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-21 13:27:12,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412745369] [2019-11-21 13:27:12,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-21 13:27:12,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:27:12,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-21 13:27:12,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-21 13:27:12,374 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 10 states. [2019-11-21 13:27:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:27:12,534 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-21 13:27:12,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 13:27:12,538 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-21 13:27:12,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:27:12,539 INFO L225 Difference]: With dead ends: 27 [2019-11-21 13:27:12,540 INFO L226 Difference]: Without dead ends: 27 [2019-11-21 13:27:12,541 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-11-21 13:27:12,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-21 13:27:12,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-21 13:27:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-21 13:27:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-21 13:27:12,551 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2019-11-21 13:27:12,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:27:12,552 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-21 13:27:12,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-21 13:27:12,553 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-21 13:27:12,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 13:27:12,555 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:27:12,556 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:27:12,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:27:12,760 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, expandArrayErr1REQUIRES_VIOLATION, expandArrayErr0REQUIRES_VIOLATION]=== [2019-11-21 13:27:12,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:27:12,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1485319190, now seen corresponding path program 1 times [2019-11-21 13:27:12,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:27:12,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [305163258] [2019-11-21 13:27:12,763 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 13:27:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:27:12,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 13:27:12,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:27:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:13,022 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:27:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:13,059 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [305163258] [2019-11-21 13:27:13,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:27:13,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-21 13:27:13,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711267471] [2019-11-21 13:27:13,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 13:27:13,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:27:13,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 13:27:13,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-21 13:27:13,062 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2019-11-21 13:27:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:27:13,124 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2019-11-21 13:27:13,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 13:27:13,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-21 13:27:13,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:27:13,127 INFO L225 Difference]: With dead ends: 35 [2019-11-21 13:27:13,127 INFO L226 Difference]: Without dead ends: 35 [2019-11-21 13:27:13,127 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-21 13:27:13,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-21 13:27:13,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2019-11-21 13:27:13,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-21 13:27:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-11-21 13:27:13,134 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 17 [2019-11-21 13:27:13,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:27:13,134 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-11-21 13:27:13,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 13:27:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-11-21 13:27:13,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 13:27:13,136 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:27:13,136 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:27:13,339 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:27:13,339 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, expandArrayErr1REQUIRES_VIOLATION, expandArrayErr0REQUIRES_VIOLATION]=== [2019-11-21 13:27:13,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:27:13,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1484395669, now seen corresponding path program 1 times [2019-11-21 13:27:13,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:27:13,340 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1157251025] [2019-11-21 13:27:13,340 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 13:27:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:27:13,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-21 13:27:13,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:27:13,653 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:27:13,653 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-21 13:27:13,655 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:27:13,684 INFO L567 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2019-11-21 13:27:13,685 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:27:13,685 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:5 [2019-11-21 13:27:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:13,710 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:27:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:13,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1157251025] [2019-11-21 13:27:13,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:27:13,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 13:27:13,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185268680] [2019-11-21 13:27:13,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 13:27:13,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:27:13,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 13:27:13,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 13:27:13,754 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2019-11-21 13:27:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:27:13,838 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-11-21 13:27:13,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 13:27:13,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-21 13:27:13,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:27:13,842 INFO L225 Difference]: With dead ends: 29 [2019-11-21 13:27:13,842 INFO L226 Difference]: Without dead ends: 29 [2019-11-21 13:27:13,844 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 13:27:13,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-21 13:27:13,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-21 13:27:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-21 13:27:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-21 13:27:13,852 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 17 [2019-11-21 13:27:13,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:27:13,853 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-21 13:27:13,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 13:27:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-21 13:27:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 13:27:13,854 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:27:13,854 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:27:14,061 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:27:14,062 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, expandArrayErr1REQUIRES_VIOLATION, expandArrayErr0REQUIRES_VIOLATION]=== [2019-11-21 13:27:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:27:14,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1484395668, now seen corresponding path program 1 times [2019-11-21 13:27:14,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:27:14,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1035399397] [2019-11-21 13:27:14,064 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 13:27:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:27:14,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-21 13:27:14,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:27:14,374 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 13:27:14,375 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:27:14,435 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:27:14,437 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:27:14,437 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-21 13:27:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:14,505 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:27:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:27:15,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1035399397] [2019-11-21 13:27:15,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:27:15,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-11-21 13:27:15,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000103780] [2019-11-21 13:27:15,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-21 13:27:15,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:27:15,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-21 13:27:15,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-11-21 13:27:15,097 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 12 states. [2019-11-21 13:27:15,610 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-11-21 13:27:15,826 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2019-11-21 13:27:16,008 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2019-11-21 13:27:16,242 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2019-11-21 13:27:16,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:27:16,631 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2019-11-21 13:27:16,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-21 13:27:16,632 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2019-11-21 13:27:16,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:27:16,634 INFO L225 Difference]: With dead ends: 76 [2019-11-21 13:27:16,635 INFO L226 Difference]: Without dead ends: 74 [2019-11-21 13:27:16,635 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2019-11-21 13:27:16,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-21 13:27:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 48. [2019-11-21 13:27:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-21 13:27:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2019-11-21 13:27:16,642 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 17 [2019-11-21 13:27:16,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:27:16,643 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2019-11-21 13:27:16,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-21 13:27:16,643 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2019-11-21 13:27:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-21 13:27:16,644 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:27:16,644 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:27:16,846 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:27:16,847 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, expandArrayErr1REQUIRES_VIOLATION, expandArrayErr0REQUIRES_VIOLATION]=== [2019-11-21 13:27:16,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:27:16,847 INFO L82 PathProgramCache]: Analyzing trace with hash 872910678, now seen corresponding path program 1 times [2019-11-21 13:27:16,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:27:16,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1010148306] [2019-11-21 13:27:16,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:27:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 13:27:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 13:27:17,278 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-21 13:27:17,278 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 13:27:17,483 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:27:17,515 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-21 13:27:17,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:27:17 BoogieIcfgContainer [2019-11-21 13:27:17,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 13:27:17,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 13:27:17,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 13:27:17,551 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 13:27:17,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:27:10" (3/4) ... [2019-11-21 13:27:17,554 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-21 13:27:17,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 13:27:17,556 INFO L168 Benchmark]: Toolchain (without parser) took 8246.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -85.0 MB). Peak memory consumption was 95.4 MB. Max. memory is 11.5 GB. [2019-11-21 13:27:17,557 INFO L168 Benchmark]: CDTParser took 0.30 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 13:27:17,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 82.8 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -98.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-21 13:27:17,560 INFO L168 Benchmark]: Boogie Preprocessor took 61.98 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-21 13:27:17,564 INFO L168 Benchmark]: RCFGBuilder took 599.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. [2019-11-21 13:27:17,567 INFO L168 Benchmark]: TraceAbstraction took 6829.80 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 97.5 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -40.1 MB). Peak memory consumption was 57.4 MB. Max. memory is 11.5 GB. [2019-11-21 13:27:17,567 INFO L168 Benchmark]: Witness Printer took 3.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 13:27:17,570 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 745.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 82.8 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -98.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.98 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 599.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6829.80 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 97.5 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -40.1 MB). Peak memory consumption was 57.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. 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: 525]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 525. Possible FailurePath: [L512] int num; [L513] int ind, newsize, i = 1; VAL [\old(i)=0, \old(ind)=0, \old(newsize)=0, \old(num)=0, i=1, ind=0, newsize=0, num=0] [L526] num = __VERIFIER_nondet_int() [L527] COND FALSE !(!(num > 0 && num < 100)) [L530] int *a = (int *)malloc(sizeof(int)); VAL [\old(argc)=0, \old(newsize)=0, \old(num)=0, a={-2147483648:0}, argc=0, argv={0:0}, argv={0:0}, i=1, ind=0, malloc(sizeof(int))={-2147483648:0}, newsize=0, num=1] [L531] COND FALSE !(a == ((void *)0)) [L534] newsize = 0 VAL [\old(argc)=0, \old(newsize)=0, \old(num)=0, a={-2147483648:0}, argc=0, argv={0:0}, argv={0:0}, i=1, ind=0, malloc(sizeof(int))={-2147483648:0}, newsize=0, num=1] [L535] CALL expandArray(a) VAL [\old(newsize)=0, \old(num)=0, arg={-2147483648:0}, i=1, ind=0, newsize=0, num=1] [L515] int *a = (int *)arg; VAL [\old(newsize)=0, \old(num)=0, a={-2147483648:0}, arg={-2147483648:0}, arg={-2147483648:0}, i=1, ind=0, newsize=0, num=1] [L516] COND TRUE newsize < num [L517] newsize = newsize + 1 [L518] int *b = ((void *)0); VAL [\old(newsize)=0, \old(num)=0, a={-2147483648:0}, arg={-2147483648:0}, arg={-2147483648:0}, b={0:0}, i=1, ind=0, newsize=1, num=1] [L519] EXPR, FCALL realloc(a, sizeof(int) * newsize) VAL [\old(newsize)=0, \old(num)=0, a={-2147483648:0}, arg={-2147483648:0}, arg={-2147483648:0}, b={0:0}, i=1, ind=0, newsize=1, num=1, realloc(a, sizeof(int) * newsize)={-2147483648:0}] [L519] b = realloc(a, sizeof(int) * newsize) [L520] b[newsize - 1] = i VAL [\old(newsize)=0, \old(num)=0, a={-2147483648:0}, arg={-2147483648:0}, arg={-2147483648:0}, b={-2147483648:0}, i=1, ind=0, newsize=1, num=1] [L521] a = b VAL [\old(newsize)=0, \old(num)=0, a={-2147483648:0}, arg={-2147483648:0}, arg={-2147483648:0}, b={-2147483648:0}, i=1, ind=0, newsize=1, num=1] [L516] COND FALSE !(newsize < num) VAL [\old(newsize)=0, \old(num)=0, a={-2147483648:0}, arg={-2147483648:0}, arg={-2147483648:0}, b={-2147483648:0}, i=1, ind=0, newsize=1, num=1] [L523] return 0; VAL [\old(newsize)=0, \old(num)=0, \result={0:0}, a={-2147483648:0}, arg={-2147483648:0}, arg={-2147483648:0}, b={-2147483648:0}, i=1, ind=0, newsize=1, num=1] [L535] RET expandArray(a) VAL [\old(argc)=0, \old(newsize)=0, \old(num)=0, a={-2147483648:0}, argc=0, argv={0:0}, argv={0:0}, expandArray(a)={0:0}, i=1, ind=0, malloc(sizeof(int))={-2147483648:0}, newsize=1, num=1] [L536] return 0; VAL [\old(argc)=0, \old(newsize)=0, \old(num)=0, \result=0, a={-2147483648:0}, argc=0, argv={0:0}, argv={0:0}, i=1, ind=0, malloc(sizeof(int))={-2147483648:0}, newsize=1, num=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 44 locations, 3 error locations. Result: UNSAFE, OverallTime: 6.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 145 SDtfs, 162 SDslu, 231 SDs, 0 SdLazy, 194 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=6, 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, 6 MinimizatonAttempts, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 9589 SizeOfPredicates, 10 NumberOfNonLiveVariables, 474 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...