./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer --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 0e7174a28ac52b04ed4de9f759628aa0f94f2add ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.24-6b5699a [2019-11-25 08:45:23,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:45:23,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:45:23,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:45:23,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:45:23,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:45:23,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:45:23,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:45:23,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:45:23,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:45:23,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:45:23,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:45:23,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:45:23,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:45:23,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:45:23,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:45:23,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:45:23,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:45:23,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:45:23,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:45:23,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:45:23,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:45:23,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:45:23,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:45:23,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:45:23,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:45:23,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:45:23,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:45:23,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:45:23,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:45:23,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:45:23,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:45:23,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:45:23,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:45:23,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:45:23,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:45:23,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:45:23,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:45:23,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:45:23,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:45:23,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:45:23,158 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:45:23,182 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:45:23,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:45:23,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:45:23,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:45:23,183 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:45:23,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:45:23,184 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:45:23,184 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:45:23,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:45:23,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:45:23,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:45:23,185 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:45:23,185 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:45:23,185 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:45:23,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:45:23,185 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:45:23,186 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:45:23,186 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:45:23,186 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:45:23,186 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:45:23,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:45:23,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:45:23,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:45:23,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:45:23,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:45:23,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:45:23,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:45:23,188 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:45:23,188 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:45:23,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:45:23,188 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer 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 -> 0e7174a28ac52b04ed4de9f759628aa0f94f2add [2019-11-25 08:45:23,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:45:23,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:45:23,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:45:23,366 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:45:23,366 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:45:23,368 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/../../sv-benchmarks/c/memsafety/test-0158-2.i [2019-11-25 08:45:23,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/data/f35d7c838/b5ae35a779e24d29ab324a9f1ee51bf4/FLAG38b43bac5 [2019-11-25 08:45:23,894 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:45:23,895 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/sv-benchmarks/c/memsafety/test-0158-2.i [2019-11-25 08:45:23,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/data/f35d7c838/b5ae35a779e24d29ab324a9f1ee51bf4/FLAG38b43bac5 [2019-11-25 08:45:24,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/data/f35d7c838/b5ae35a779e24d29ab324a9f1ee51bf4 [2019-11-25 08:45:24,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:45:24,397 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:45:24,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:45:24,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:45:24,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:45:24,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c824ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24, skipping insertion in model container [2019-11-25 08:45:24,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:45:24,455 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:45:24,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:45:24,787 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:45:24,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:45:24,886 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:45:24,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24 WrapperNode [2019-11-25 08:45:24,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:45:24,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:45:24,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:45:24,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:45:24,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:45:24,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:45:24,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:45:24,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:45:24,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/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 [2019-11-25 08:45:25,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:45:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:45:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:45:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-25 08:45:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-25 08:45:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-25 08:45:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-25 08:45:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-25 08:45:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:45:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-25 08:45:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:45:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:45:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:45:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:45:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:45:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:45:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:45:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:45:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:45:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:45:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:45:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:45:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:45:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:45:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:45:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:45:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-25 08:45:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-25 08:45:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-25 08:45:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-25 08:45:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-25 08:45:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:45:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:45:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:45:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:45:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:45:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:45:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:45:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:45:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:45:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:45:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:45:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:45:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:45:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:45:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:45:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:45:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:45:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:45:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:45:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:45:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:45:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:45:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:45:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:45:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:45:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:45:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:45:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:45:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:45:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:45:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:45:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:45:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:45:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:45:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:45:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:45:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:45:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:45:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:45:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:45:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:45:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:45:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:45:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:45:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:45:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:45:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:45:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:45:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:45:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:45:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:45:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:45:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:45:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:45:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:45:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:45:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:45:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:45:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:45:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:45:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:45:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:45:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:45:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:45:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:45:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:45:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:45:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:45:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:45:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:45:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:45:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:45:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:45:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:45:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:45:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:45:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:45:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:45:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:45:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:45:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:45:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:45:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:45:25,043 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:45:25,043 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:45:25,043 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:45:25,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:45:25,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:45:25,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:45:25,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:45:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-25 08:45:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:45:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:45:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:45:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:45:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:45:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-25 08:45:25,529 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:45:25,529 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-25 08:45:25,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:25 BoogieIcfgContainer [2019-11-25 08:45:25,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:45:25,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:45:25,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:45:25,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:45:25,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:45:24" (1/3) ... [2019-11-25 08:45:25,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d1b327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:45:25, skipping insertion in model container [2019-11-25 08:45:25,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (2/3) ... [2019-11-25 08:45:25,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d1b327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:45:25, skipping insertion in model container [2019-11-25 08:45:25,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:25" (3/3) ... [2019-11-25 08:45:25,537 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2019-11-25 08:45:25,546 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:45:25,552 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-25 08:45:25,568 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-25 08:45:25,584 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:45:25,584 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:45:25,584 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:45:25,584 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:45:25,584 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:45:25,584 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:45:25,584 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:45:25,585 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:45:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-25 08:45:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:45:25,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:25,605 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:25,605 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:45:25,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:25,610 INFO L82 PathProgramCache]: Analyzing trace with hash -296677259, now seen corresponding path program 1 times [2019-11-25 08:45:25,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:25,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [771739479] [2019-11-25 08:45:25,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/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 [2019-11-25 08:45:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:25,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:45:25,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:25,930 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-25 08:45:25,931 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2019-11-25 08:45:25,931 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:25,939 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:25,943 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. [2019-11-25 08:45:25,943 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2019-11-25 08:45:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:25,969 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:25,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [771739479] [2019-11-25 08:45:25,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:25,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:45:25,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885327844] [2019-11-25 08:45:25,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:45:25,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:26,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:45:26,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:45:26,012 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2019-11-25 08:45:26,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:26,083 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2019-11-25 08:45:26,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:45:26,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-25 08:45:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:26,091 INFO L225 Difference]: With dead ends: 18 [2019-11-25 08:45:26,091 INFO L226 Difference]: Without dead ends: 15 [2019-11-25 08:45:26,092 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:45:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-25 08:45:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-25 08:45:26,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-25 08:45:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-11-25 08:45:26,116 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 7 [2019-11-25 08:45:26,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:26,117 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-11-25 08:45:26,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:45:26,117 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-11-25 08:45:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:45:26,117 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:26,117 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:26,318 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:26,322 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:45:26,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:26,322 INFO L82 PathProgramCache]: Analyzing trace with hash -296677258, now seen corresponding path program 1 times [2019-11-25 08:45:26,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:26,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [160932131] [2019-11-25 08:45:26,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/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 [2019-11-25 08:45:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:26,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:45:26,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:26,502 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_25|]} [2019-11-25 08:45:26,514 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:45:26,516 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-11-25 08:45:26,516 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:26,532 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:26,539 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:45:26,543 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-11-25 08:45:26,544 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:26,557 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:26,558 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. [2019-11-25 08:45:26,559 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-11-25 08:45:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:26,573 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:26,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [160932131] [2019-11-25 08:45:26,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:26,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:45:26,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248416640] [2019-11-25 08:45:26,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:45:26,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:26,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:45:26,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:45:26,618 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 4 states. [2019-11-25 08:45:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:26,661 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-11-25 08:45:26,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:45:26,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-25 08:45:26,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:26,662 INFO L225 Difference]: With dead ends: 12 [2019-11-25 08:45:26,662 INFO L226 Difference]: Without dead ends: 12 [2019-11-25 08:45:26,663 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:45:26,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-25 08:45:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-25 08:45:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:45:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-11-25 08:45:26,666 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 7 [2019-11-25 08:45:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:26,666 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-11-25 08:45:26,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:45:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-11-25 08:45:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:45:26,667 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:26,667 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:26,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:26,869 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:45:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:26,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1169931001, now seen corresponding path program 1 times [2019-11-25 08:45:26,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:26,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1758642143] [2019-11-25 08:45:26,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ab51e9-5bd8-4fd0-9c64-c3f48ecc8dc4/bin/uautomizer/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 [2019-11-25 08:45:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:45:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:45:27,204 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:45:27,204 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:45:27,404 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:27,417 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-25 08:45:27,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:45:27 BoogieIcfgContainer [2019-11-25 08:45:27,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:45:27,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:45:27,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:45:27,426 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:45:27,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:25" (3/4) ... [2019-11-25 08:45:27,429 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:45:27,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:45:27,431 INFO L168 Benchmark]: Toolchain (without parser) took 3034.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 939.3 MB in the beginning and 947.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 130.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:27,431 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:45:27,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:27,433 INFO L168 Benchmark]: Boogie Preprocessor took 69.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:27,433 INFO L168 Benchmark]: RCFGBuilder took 573.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:27,434 INFO L168 Benchmark]: TraceAbstraction took 1893.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 947.8 MB in the end (delta: 124.5 MB). Peak memory consumption was 124.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:27,434 INFO L168 Benchmark]: Witness Printer took 4.38 ms. Allocated memory is still 1.2 GB. Free memory is still 947.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:45:27,437 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 489.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 69.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 573.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1893.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 947.8 MB in the end (delta: 124.5 MB). Peak memory consumption was 124.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.38 ms. Allocated memory is still 1.2 GB. Free memory is still 947.8 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: 512]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 512. Possible FailurePath: [L514-L521] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L522] data.p0 = malloc(37U) VAL [data={536870912:0}, malloc(37U)={-2147483648:0}] [L523] data.str.p2 = &data VAL [data={536870912:0}, malloc(37U)={-2147483648:0}] [L524] data.str.c[1] = sizeof data.str.p1 VAL [data={536870912:0}, malloc(37U)={-2147483648:0}] [L525] return 0; [L525] return 0; VAL [\result=0, malloc(37U)={-2147483648:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 42 locations, 7 error locations. Result: UNSAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 15 SDslu, 18 SDs, 0 SdLazy, 17 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 2 QuantifiedInterpolants, 498 SizeOfPredicates, 5 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...