./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/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 b03be66939377379d1133485be57e118e2bd7c88 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:03,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:03,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:03,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:03,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:03,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:03,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:03,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:03,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:03,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:03,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:03,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:03,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:03,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:03,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:03,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:03,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:03,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:03,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:03,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:03,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:03,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:03,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:03,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:03,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:03,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:03,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:03,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:03,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:03,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:03,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:03,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:03,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:03,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:03,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:03,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:03,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:03,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:03,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:03,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:03,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:03,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:56:03,761 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:03,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:03,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:03,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:03,763 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:03,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:03,763 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:03,763 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:03,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:03,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:03,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:03,764 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:56:03,764 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:56:03,764 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:56:03,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:03,765 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:03,765 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:03,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:03,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:03,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:03,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:03,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:03,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:03,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:03,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:03,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:03,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/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 -> b03be66939377379d1133485be57e118e2bd7c88 [2019-10-22 08:56:03,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:03,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:03,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:03,810 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:03,811 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:03,811 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/bin/uautomizer/../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2019-10-22 08:56:03,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/bin/uautomizer/data/9e11573dc/10ed8fd97a5f4060a3d90d73d3a75840/FLAG74a53160e [2019-10-22 08:56:04,290 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:04,291 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2019-10-22 08:56:04,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/bin/uautomizer/data/9e11573dc/10ed8fd97a5f4060a3d90d73d3a75840/FLAG74a53160e [2019-10-22 08:56:04,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/bin/uautomizer/data/9e11573dc/10ed8fd97a5f4060a3d90d73d3a75840 [2019-10-22 08:56:04,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:04,320 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:56:04,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:04,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:04,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:04,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:04" (1/1) ... [2019-10-22 08:56:04,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14aebc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:04, skipping insertion in model container [2019-10-22 08:56:04,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:04" (1/1) ... [2019-10-22 08:56:04,335 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:04,366 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:04,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:04,683 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:04,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:04,764 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:04,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:04 WrapperNode [2019-10-22 08:56:04,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:04,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:04,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:04,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:04,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:04" (1/1) ... [2019-10-22 08:56:04,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:04" (1/1) ... [2019-10-22 08:56:04,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:04" (1/1) ... [2019-10-22 08:56:04,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:04" (1/1) ... [2019-10-22 08:56:04,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:04" (1/1) ... [2019-10-22 08:56:04,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:04" (1/1) ... [2019-10-22 08:56:04,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:04" (1/1) ... [2019-10-22 08:56:04,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:04,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:04,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:04,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:04,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/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 [2019-10-22 08:56:04,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:56:04,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:04,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:56:04,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:56:04,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 08:56:04,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 08:56:04,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 08:56:04,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:56:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-22 08:56:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:56:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:56:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:56:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:56:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:56:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:56:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:56:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:56:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:56:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:56:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:56:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:56:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:56:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:56:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:56:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:56:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:56:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:56:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 08:56:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 08:56:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 08:56:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:56:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:56:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:56:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:56:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:56:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:56:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:56:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:56:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:56:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:56:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:56:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:56:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:56:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:56:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:56:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:56:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:56:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:56:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:56:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:56:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:56:04,869 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:56:04,869 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:56:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:56:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:56:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:56:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:56:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:56:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:56:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:56:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:56:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:56:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:56:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:56:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:56:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:56:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:56:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:56:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:56:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:56:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:56:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:56:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:56:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:56:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:56:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:56:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:56:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:56:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:56:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:56:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:56:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:56:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:56:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:56:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:56:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:56:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:56:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:56:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:56:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:56:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:56:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:56:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:56:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:56:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:56:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:56:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:56:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:56:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:56:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:56:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:56:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:56:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:56:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:56:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:56:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:56:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:56:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:56:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:56:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:56:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:56:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:56:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:56:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:56:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:56:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:56:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 08:56:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:56:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:56:04,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:56:04,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 08:56:04,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:56:04,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:56:04,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 08:56:04,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:56:04,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:56:04,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:05,409 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:05,409 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-22 08:56:05,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:05 BoogieIcfgContainer [2019-10-22 08:56:05,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:05,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:05,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:05,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:05,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:04" (1/3) ... [2019-10-22 08:56:05,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3ea9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:05, skipping insertion in model container [2019-10-22 08:56:05,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:04" (2/3) ... [2019-10-22 08:56:05,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3ea9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:05, skipping insertion in model container [2019-10-22 08:56:05,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:05" (3/3) ... [2019-10-22 08:56:05,418 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0158_1-1.i [2019-10-22 08:56:05,428 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:05,435 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2019-10-22 08:56:05,445 INFO L249 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2019-10-22 08:56:05,467 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:05,467 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:56:05,467 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:05,468 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:05,469 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:05,469 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:05,469 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:05,469 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-10-22 08:56:05,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:56:05,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:05,495 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:05,497 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr6REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-10-22 08:56:05,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:05,502 INFO L82 PathProgramCache]: Analyzing trace with hash -804131878, now seen corresponding path program 1 times [2019-10-22 08:56:05,510 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:05,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240596591] [2019-10-22 08:56:05,510 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:05,510 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:05,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:05,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240596591] [2019-10-22 08:56:05,691 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:05,692 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:05,692 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935106690] [2019-10-22 08:56:05,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:05,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:05,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:05,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:05,712 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2019-10-22 08:56:05,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:05,836 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-10-22 08:56:05,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:05,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 08:56:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:05,848 INFO L225 Difference]: With dead ends: 32 [2019-10-22 08:56:05,849 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:56:05,850 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:05,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:56:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 08:56:05,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:56:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-10-22 08:56:05,888 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 7 [2019-10-22 08:56:05,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:05,889 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-10-22 08:56:05,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:05,890 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-10-22 08:56:05,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:56:05,890 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:05,890 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:05,891 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr6REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-10-22 08:56:05,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:05,891 INFO L82 PathProgramCache]: Analyzing trace with hash -804131877, now seen corresponding path program 1 times [2019-10-22 08:56:05,891 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:05,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308368392] [2019-10-22 08:56:05,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:05,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:05,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:05,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308368392] [2019-10-22 08:56:05,954 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:05,954 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:05,954 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149084471] [2019-10-22 08:56:05,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:05,955 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:05,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:05,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:05,956 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2019-10-22 08:56:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:06,014 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-10-22 08:56:06,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:06,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 08:56:06,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:06,015 INFO L225 Difference]: With dead ends: 23 [2019-10-22 08:56:06,015 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 08:56:06,016 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 08:56:06,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-22 08:56:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-22 08:56:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-10-22 08:56:06,019 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2019-10-22 08:56:06,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:06,019 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-10-22 08:56:06,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:06,019 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-10-22 08:56:06,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 08:56:06,020 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:06,020 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:06,022 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr6REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-10-22 08:56:06,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:06,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1963047839, now seen corresponding path program 1 times [2019-10-22 08:56:06,023 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:06,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305751034] [2019-10-22 08:56:06,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:06,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:06,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:06,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305751034] [2019-10-22 08:56:06,121 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:06,121 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:06,121 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425772177] [2019-10-22 08:56:06,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:06,121 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:06,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:06,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:06,122 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2019-10-22 08:56:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:06,195 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-10-22 08:56:06,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:06,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-10-22 08:56:06,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:06,196 INFO L225 Difference]: With dead ends: 22 [2019-10-22 08:56:06,196 INFO L226 Difference]: Without dead ends: 22 [2019-10-22 08:56:06,196 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:06,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-22 08:56:06,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-22 08:56:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 08:56:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-10-22 08:56:06,199 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2019-10-22 08:56:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:06,200 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-10-22 08:56:06,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-10-22 08:56:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:56:06,200 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:06,200 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:06,201 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr6REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-10-22 08:56:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash -724940792, now seen corresponding path program 1 times [2019-10-22 08:56:06,201 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:06,201 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898590845] [2019-10-22 08:56:06,201 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:06,202 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:06,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:06,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898590845] [2019-10-22 08:56:06,292 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:06,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:06,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935992918] [2019-10-22 08:56:06,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:06,293 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:06,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:06,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:06,294 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2019-10-22 08:56:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:06,362 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-10-22 08:56:06,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:06,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-10-22 08:56:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:06,364 INFO L225 Difference]: With dead ends: 21 [2019-10-22 08:56:06,364 INFO L226 Difference]: Without dead ends: 21 [2019-10-22 08:56:06,364 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-22 08:56:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-22 08:56:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-22 08:56:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-10-22 08:56:06,366 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2019-10-22 08:56:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:06,367 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-10-22 08:56:06,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-10-22 08:56:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 08:56:06,367 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:06,368 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:06,368 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr6REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-10-22 08:56:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:06,368 INFO L82 PathProgramCache]: Analyzing trace with hash -998327997, now seen corresponding path program 1 times [2019-10-22 08:56:06,369 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:06,369 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609998073] [2019-10-22 08:56:06,369 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:06,369 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:06,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:06,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609998073] [2019-10-22 08:56:06,423 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:06,423 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:06,424 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155156680] [2019-10-22 08:56:06,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:06,424 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:06,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:06,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:06,425 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 6 states. [2019-10-22 08:56:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:06,514 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-10-22 08:56:06,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:06,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-10-22 08:56:06,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:06,516 INFO L225 Difference]: With dead ends: 20 [2019-10-22 08:56:06,516 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 08:56:06,516 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 08:56:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 08:56:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 08:56:06,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-10-22 08:56:06,518 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2019-10-22 08:56:06,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:06,519 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-10-22 08:56:06,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-10-22 08:56:06,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:56:06,519 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:06,519 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:06,520 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr6REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-10-22 08:56:06,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:06,520 INFO L82 PathProgramCache]: Analyzing trace with hash -883396757, now seen corresponding path program 1 times [2019-10-22 08:56:06,520 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:06,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36316766] [2019-10-22 08:56:06,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:06,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:06,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:06,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36316766] [2019-10-22 08:56:06,770 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:06,770 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:56:06,770 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730875940] [2019-10-22 08:56:06,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:56:06,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:06,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:56:06,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:06,771 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2019-10-22 08:56:06,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:06,968 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-22 08:56:06,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:56:06,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-10-22 08:56:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:06,969 INFO L225 Difference]: With dead ends: 19 [2019-10-22 08:56:06,969 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:56:06,969 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:56:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:56:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:56:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:56:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:56:06,970 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-22 08:56:06,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:06,970 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:06,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:56:06,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:56:06,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:56:06,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:06 BoogieIcfgContainer [2019-10-22 08:56:06,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:06,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:06,981 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:06,981 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:06,982 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:05" (3/4) ... [2019-10-22 08:56:06,985 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:56:06,993 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-10-22 08:56:06,993 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-10-22 08:56:06,994 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-10-22 08:56:06,994 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-10-22 08:56:06,994 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-10-22 08:56:06,994 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-10-22 08:56:06,994 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-10-22 08:56:07,000 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-10-22 08:56:07,000 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 08:56:07,001 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:56:07,049 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c946e123-7522-4a48-9f8b-9159f0246731/bin/uautomizer/witness.graphml [2019-10-22 08:56:07,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:07,051 INFO L168 Benchmark]: Toolchain (without parser) took 2730.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 939.1 MB in the beginning and 911.6 MB in the end (delta: 27.5 MB). Peak memory consumption was 163.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:07,051 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:07,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -181.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:07,052 INFO L168 Benchmark]: Boogie Preprocessor took 44.04 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. [2019-10-22 08:56:07,053 INFO L168 Benchmark]: RCFGBuilder took 600.65 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: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:07,053 INFO L168 Benchmark]: TraceAbstraction took 1569.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 911.6 MB in the end (delta: 156.7 MB). Peak memory consumption was 156.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:07,054 INFO L168 Benchmark]: Witness Printer took 68.44 ms. Allocated memory is still 1.2 GB. Free memory is still 911.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:07,055 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 444.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -181.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.04 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 600.65 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: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1569.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 911.6 MB in the end (delta: 156.7 MB). Peak memory consumption was 156.7 MB. Max. memory is 11.5 GB. * Witness Printer took 68.44 ms. Allocated memory is still 1.2 GB. Free memory is still 911.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 513]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 532]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 532]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 53 locations, 16 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 113 SDslu, 105 SDs, 0 SdLazy, 268 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 7732 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be correct! Received shutdown request...