./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 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_f9358ca7-0182-4a6e-9268-c8d6587dc350/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/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 3187b9137fe836a772e635b057217bb3e86134c2 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-678e011 [2019-11-20 11:36:42,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:36:42,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:36:42,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:36:42,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:36:42,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:36:42,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:36:42,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:36:42,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:36:42,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:36:42,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:36:42,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:36:42,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:36:42,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:36:42,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:36:42,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:36:42,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:36:42,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:36:42,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:36:42,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:36:42,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:36:42,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:36:42,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:36:42,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:36:42,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:36:42,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:36:42,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:36:42,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:36:42,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:36:42,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:36:42,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:36:42,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:36:42,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:36:42,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:36:42,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:36:42,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:36:42,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:36:42,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:36:42,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:36:42,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:36:42,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:36:42,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 11:36:42,921 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:36:42,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:36:42,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:36:42,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:36:42,923 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:36:42,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:36:42,923 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:36:42,923 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 11:36:42,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:36:42,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:36:42,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:36:42,924 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 11:36:42,924 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 11:36:42,925 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 11:36:42,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:36:42,925 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 11:36:42,925 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 11:36:42,925 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:36:42,926 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:36:42,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:36:42,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:36:42,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:36:42,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:36:42,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:36:42,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:36:42,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:36:42,927 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 11:36:42,928 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 11:36:42,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 11:36:42,928 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_f9358ca7-0182-4a6e-9268-c8d6587dc350/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 -> 3187b9137fe836a772e635b057217bb3e86134c2 [2019-11-20 11:36:43,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:36:43,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:36:43,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:36:43,133 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:36:43,133 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:36:43,134 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/bin/uautomizer/../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2019-11-20 11:36:43,193 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/bin/uautomizer/data/32c27bc78/9c51aed6dba145b9951253d70ea71be7/FLAG18c80b99e [2019-11-20 11:36:43,638 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:36:43,639 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2019-11-20 11:36:43,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/bin/uautomizer/data/32c27bc78/9c51aed6dba145b9951253d70ea71be7/FLAG18c80b99e [2019-11-20 11:36:43,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/bin/uautomizer/data/32c27bc78/9c51aed6dba145b9951253d70ea71be7 [2019-11-20 11:36:43,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:36:43,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 11:36:43,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:36:43,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:36:43,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:36:43,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:43" (1/1) ... [2019-11-20 11:36:43,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb68d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:43, skipping insertion in model container [2019-11-20 11:36:43,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:43" (1/1) ... [2019-11-20 11:36:43,937 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:36:43,979 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:36:44,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:36:44,386 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:36:44,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:36:44,490 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:36:44,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:44 WrapperNode [2019-11-20 11:36:44,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:36:44,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:36:44,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:36:44,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:36:44,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:44" (1/1) ... [2019-11-20 11:36:44,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:44" (1/1) ... [2019-11-20 11:36:44,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:44" (1/1) ... [2019-11-20 11:36:44,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:44" (1/1) ... [2019-11-20 11:36:44,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:44" (1/1) ... [2019-11-20 11:36:44,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:44" (1/1) ... [2019-11-20 11:36:44,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:44" (1/1) ... [2019-11-20 11:36:44,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:36:44,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:36:44,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:36:44,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:36:44,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/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 [2019-11-20 11:36:44,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 11:36:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:36:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 11:36:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 11:36:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 11:36:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 11:36:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 11:36:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 11:36:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 11:36:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 11:36:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 11:36:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 11:36:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 11:36:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 11:36:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 11:36:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 11:36:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 11:36:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 11:36:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 11:36:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 11:36:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 11:36:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 11:36:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 11:36:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 11:36:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 11:36:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 11:36:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 11:36:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 11:36:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 11:36:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 11:36:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 11:36:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 11:36:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 11:36:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 11:36:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 11:36:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 11:36:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 11:36:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 11:36:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 11:36:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 11:36:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 11:36:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 11:36:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 11:36:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 11:36:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 11:36:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 11:36:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 11:36:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 11:36:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 11:36:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 11:36:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 11:36:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 11:36:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 11:36:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 11:36:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 11:36:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 11:36:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 11:36:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 11:36:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 11:36:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 11:36:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 11:36:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 11:36:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 11:36:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 11:36:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 11:36:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 11:36:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 11:36:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 11:36:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 11:36:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 11:36:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 11:36:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 11:36:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 11:36:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 11:36:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 11:36:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 11:36:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 11:36:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 11:36:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 11:36:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 11:36:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 11:36:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 11:36:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 11:36:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 11:36:44,666 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 11:36:44,666 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 11:36:44,666 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 11:36:44,666 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 11:36:44,666 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 11:36:44,666 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 11:36:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 11:36:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 11:36:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 11:36:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 11:36:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 11:36:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 11:36:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 11:36:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 11:36:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 11:36:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 11:36:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 11:36:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 11:36:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 11:36:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 11:36:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 11:36:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 11:36:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 11:36:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 11:36:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 11:36:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 11:36:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 11:36:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 11:36:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 11:36:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 11:36:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 11:36:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 11:36:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 11:36:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 11:36:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 11:36:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 11:36:44,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 11:36:44,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 11:36:44,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 11:36:44,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-20 11:36:44,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 11:36:44,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 11:36:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:36:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-20 11:36:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 11:36:45,175 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:36:45,175 INFO L285 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-20 11:36:45,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:45 BoogieIcfgContainer [2019-11-20 11:36:45,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:36:45,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:36:45,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:36:45,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:36:45,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:36:43" (1/3) ... [2019-11-20 11:36:45,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119708f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:45, skipping insertion in model container [2019-11-20 11:36:45,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:44" (2/3) ... [2019-11-20 11:36:45,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119708f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:45, skipping insertion in model container [2019-11-20 11:36:45,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:45" (3/3) ... [2019-11-20 11:36:45,185 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2019-11-20 11:36:45,195 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:36:45,206 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-11-20 11:36:45,216 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-11-20 11:36:45,234 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:36:45,234 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 11:36:45,235 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:36:45,235 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:36:45,235 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:36:45,235 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:36:45,235 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:36:45,235 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:36:45,248 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-20 11:36:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 11:36:45,257 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:36:45,258 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:36:45,258 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 11:36:45,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:36:45,264 INFO L82 PathProgramCache]: Analyzing trace with hash -202007183, now seen corresponding path program 1 times [2019-11-20 11:36:45,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:36:45,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1064852490] [2019-11-20 11:36:45,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/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 [2019-11-20 11:36:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:36:45,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 11:36:45,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:36:45,577 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-20 11:36:45,577 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 [2019-11-20 11:36:45,578 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:36:45,592 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:36:45,594 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. [2019-11-20 11:36:45,595 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2019-11-20 11:36:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:45,618 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:36:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:45,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1064852490] [2019-11-20 11:36:45,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:36:45,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 11:36:45,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247048090] [2019-11-20 11:36:45,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 11:36:45,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:36:45,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 11:36:45,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 11:36:45,662 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2019-11-20 11:36:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:36:45,779 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-11-20 11:36:45,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 11:36:45,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-20 11:36:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:36:45,789 INFO L225 Difference]: With dead ends: 24 [2019-11-20 11:36:45,789 INFO L226 Difference]: Without dead ends: 21 [2019-11-20 11:36:45,791 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 [2019-11-20 11:36:45,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-20 11:36:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-20 11:36:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 11:36:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-11-20 11:36:45,838 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 7 [2019-11-20 11:36:45,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:36:45,838 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-11-20 11:36:45,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 11:36:45,839 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-11-20 11:36:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 11:36:45,839 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:36:45,840 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:36:46,044 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:46,044 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 11:36:46,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:36:46,045 INFO L82 PathProgramCache]: Analyzing trace with hash -202007182, now seen corresponding path program 1 times [2019-11-20 11:36:46,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:36:46,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1598765543] [2019-11-20 11:36:46,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/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 [2019-11-20 11:36:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:36:46,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 11:36:46,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:36:46,226 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_17|], 1=[|v_#valid_29|]} [2019-11-20 11:36:46,235 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 11:36:46,238 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 [2019-11-20 11:36:46,238 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:36:46,255 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:36:46,258 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 11:36:46,263 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 [2019-11-20 11:36:46,263 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 11:36:46,273 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:36:46,273 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. [2019-11-20 11:36:46,274 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-11-20 11:36:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:46,296 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:36:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:36:46,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1598765543] [2019-11-20 11:36:46,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:36:46,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 11:36:46,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800547506] [2019-11-20 11:36:46,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 11:36:46,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:36:46,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 11:36:46,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 11:36:46,356 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 4 states. [2019-11-20 11:36:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:36:46,408 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-11-20 11:36:46,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 11:36:46,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-20 11:36:46,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:36:46,411 INFO L225 Difference]: With dead ends: 16 [2019-11-20 11:36:46,411 INFO L226 Difference]: Without dead ends: 16 [2019-11-20 11:36:46,412 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 [2019-11-20 11:36:46,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-20 11:36:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-20 11:36:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 11:36:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-20 11:36:46,414 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 7 [2019-11-20 11:36:46,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:36:46,415 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-20 11:36:46,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 11:36:46,415 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-20 11:36:46,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 11:36:46,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:36:46,416 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:36:46,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:46,617 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 11:36:46,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:36:46,618 INFO L82 PathProgramCache]: Analyzing trace with hash -522772387, now seen corresponding path program 1 times [2019-11-20 11:36:46,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:36:46,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1963746293] [2019-11-20 11:36:46,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9358ca7-0182-4a6e-9268-c8d6587dc350/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 [2019-11-20 11:36:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:36:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:36:46,897 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 11:36:46,897 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 11:36:47,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:36:47,109 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-20 11:36:47,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:36:47 BoogieIcfgContainer [2019-11-20 11:36:47,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:36:47,120 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:36:47,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:36:47,120 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:36:47,121 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:45" (3/4) ... [2019-11-20 11:36:47,124 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 11:36:47,124 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:36:47,125 INFO L168 Benchmark]: Toolchain (without parser) took 3202.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 938.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 147.9 MB. Max. memory is 11.5 GB. [2019-11-20 11:36:47,126 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:36:47,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-20 11:36:47,127 INFO L168 Benchmark]: Boogie Preprocessor took 88.90 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. [2019-11-20 11:36:47,128 INFO L168 Benchmark]: RCFGBuilder took 596.12 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2019-11-20 11:36:47,128 INFO L168 Benchmark]: TraceAbstraction took 1941.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 938.4 MB in the end (delta: 129.9 MB). Peak memory consumption was 129.9 MB. Max. memory is 11.5 GB. [2019-11-20 11:36:47,129 INFO L168 Benchmark]: Witness Printer took 4.32 ms. Allocated memory is still 1.2 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:36:47,131 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 567.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 88.90 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 596.12 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1941.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 938.4 MB in the end (delta: 129.9 MB). Peak memory consumption was 129.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.32 ms. Allocated memory is still 1.2 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 513]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 513. Possible FailurePath: [L515-L522] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L523] data.p0 = malloc(37U) VAL [data={1073741824:0}, malloc(37U)={-2147483648:0}] [L524] COND FALSE !(__VERIFIER_nondet_int()) [L527] data.str.p2 = 30 VAL [data={1073741824:0}, malloc(37U)={-2147483648:0}] [L529] EXPR data.str.p2 VAL [data={1073741824:0}, data.str.p2=30, malloc(37U)={-2147483648:0}] [L529] COND FALSE !(25 > data.str.p2) [L532] return 0; [L532] return 0; VAL [\result=0, malloc(37U)={-2147483648:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 44 locations, 11 error locations. Result: UNSAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 32 SDslu, 18 SDs, 0 SdLazy, 26 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=29occurred 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, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 2 QuantifiedInterpolants, 498 SizeOfPredicates, 5 NumberOfNonLiveVariables, 74 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...