./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/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 8faa7ab505618d5a6c508309045d02d3235f2a80 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:18:25,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:18:25,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:18:25,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:18:25,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:18:25,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:18:25,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:18:25,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:18:25,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:18:25,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:18:25,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:18:25,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:18:25,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:18:25,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:18:25,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:18:25,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:18:25,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:18:25,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:18:25,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:18:25,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:18:25,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:18:25,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:18:25,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:18:25,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:18:25,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:18:25,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:18:25,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:18:25,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:18:25,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:18:25,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:18:25,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:18:25,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:18:25,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:18:25,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:18:25,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:18:25,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:18:25,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:18:25,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:18:25,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:18:25,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:18:25,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:18:25,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:18:25,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:18:25,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:18:25,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:18:25,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:18:25,625 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:18:25,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:18:25,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:18:25,626 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:18:25,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:18:25,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:18:25,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:18:25,628 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:18:25,628 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:18:25,629 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:18:25,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:18:25,629 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:18:25,630 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:18:25,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:18:25,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:18:25,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:18:25,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:18:25,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:18:25,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:18:25,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:18:25,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:18:25,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:18:25,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:18:25,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:18:25,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8faa7ab505618d5a6c508309045d02d3235f2a80 [2020-11-28 03:18:25,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:18:26,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:18:26,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:18:26,049 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:18:26,050 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:18:26,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/../../sv-benchmarks/c/memsafety/test-0158-1.i [2020-11-28 03:18:26,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/data/ccffb866b/ffc65ce1c7824b9abfdb85bdced90488/FLAGabbc28a14 [2020-11-28 03:18:26,973 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:18:26,976 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/sv-benchmarks/c/memsafety/test-0158-1.i [2020-11-28 03:18:27,019 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/data/ccffb866b/ffc65ce1c7824b9abfdb85bdced90488/FLAGabbc28a14 [2020-11-28 03:18:27,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/data/ccffb866b/ffc65ce1c7824b9abfdb85bdced90488 [2020-11-28 03:18:27,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:18:27,190 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:18:27,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:27,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:18:27,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:18:27,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:27" (1/1) ... [2020-11-28 03:18:27,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b56674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:27, skipping insertion in model container [2020-11-28 03:18:27,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:27" (1/1) ... [2020-11-28 03:18:27,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:18:27,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:18:27,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:27,604 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:18:27,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:27,714 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:18:27,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:27 WrapperNode [2020-11-28 03:18:27,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:27,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:18:27,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:18:27,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:18:27,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:27" (1/1) ... [2020-11-28 03:18:27,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:27" (1/1) ... [2020-11-28 03:18:27,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:27" (1/1) ... [2020-11-28 03:18:27,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:27" (1/1) ... [2020-11-28 03:18:27,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:27" (1/1) ... [2020-11-28 03:18:27,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:27" (1/1) ... [2020-11-28 03:18:27,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:27" (1/1) ... [2020-11-28 03:18:27,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:18:27,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:18:27,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:18:27,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:18:27,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/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 [2020-11-28 03:18:27,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:18:27,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:18:27,863 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:18:27,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:18:27,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:18:27,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:18:27,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:18:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:18:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:18:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:18:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:18:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:18:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:18:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:18:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:18:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:18:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:18:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:18:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:18:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:18:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:18:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:18:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:18:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:18:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:18:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:18:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:18:27,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:18:27,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:18:27,889 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:18:27,889 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:18:27,889 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:18:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:18:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:18:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:18:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:18:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:18:27,902 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:18:27,902 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:18:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:18:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:18:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:18:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:18:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:18:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:18:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:18:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:18:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:18:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:18:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:18:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:18:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:18:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:18:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:18:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:18:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:18:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:18:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:18:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:18:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:18:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:18:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:18:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:18:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:18:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:18:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:18:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:18:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:18:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:18:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:18:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:18:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:18:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:18:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:18:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:18:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:18:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:18:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:18:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:18:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:18:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:18:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:18:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:18:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:18:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:18:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:18:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:18:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:18:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:18:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:18:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:18:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:18:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:18:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:18:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:18:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:18:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:18:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:18:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:18:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:18:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:18:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:18:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:18:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:18:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:18:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:18:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:18:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:18:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:18:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:18:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:18:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:18:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:18:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:18:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:18:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:18:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:18:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:18:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:18:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:18:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:18:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:18:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:18:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:18:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:18:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:18:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:18:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:18:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:18:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:18:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:18:28,513 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:18:28,513 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-28 03:18:28,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:28 BoogieIcfgContainer [2020-11-28 03:18:28,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:18:28,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:18:28,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:18:28,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:18:28,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:18:27" (1/3) ... [2020-11-28 03:18:28,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592d835a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:28, skipping insertion in model container [2020-11-28 03:18:28,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:27" (2/3) ... [2020-11-28 03:18:28,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592d835a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:28, skipping insertion in model container [2020-11-28 03:18:28,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:28" (3/3) ... [2020-11-28 03:18:28,528 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-1.i [2020-11-28 03:18:28,547 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:18:28,552 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-11-28 03:18:28,566 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-11-28 03:18:28,590 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:18:28,590 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:18:28,591 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:18:28,591 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:18:28,591 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:18:28,591 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:18:28,591 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:18:28,591 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:18:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-28 03:18:28,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:18:28,614 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:28,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:28,615 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:18:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:28,627 INFO L82 PathProgramCache]: Analyzing trace with hash 808796717, now seen corresponding path program 1 times [2020-11-28 03:18:28,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:28,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297291476] [2020-11-28 03:18:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:28,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:18:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:28,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297291476] [2020-11-28 03:18:28,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:28,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:18:28,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608160188] [2020-11-28 03:18:28,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:18:28,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:28,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:18:28,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:18:28,954 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-11-28 03:18:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:29,059 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-11-28 03:18:29,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:18:29,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 03:18:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:29,080 INFO L225 Difference]: With dead ends: 23 [2020-11-28 03:18:29,087 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 03:18:29,089 INFO L677 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 [2020-11-28 03:18:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 03:18:29,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 03:18:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:18:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-11-28 03:18:29,129 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 7 [2020-11-28 03:18:29,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:29,129 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-11-28 03:18:29,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:18:29,130 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-11-28 03:18:29,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:18:29,131 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:29,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:29,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:18:29,132 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:18:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:29,134 INFO L82 PathProgramCache]: Analyzing trace with hash 808796718, now seen corresponding path program 1 times [2020-11-28 03:18:29,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:29,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327221372] [2020-11-28 03:18:29,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:18:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:29,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327221372] [2020-11-28 03:18:29,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:29,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:18:29,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280092162] [2020-11-28 03:18:29,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:18:29,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:29,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:18:29,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:18:29,317 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 4 states. [2020-11-28 03:18:29,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:29,383 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2020-11-28 03:18:29,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:18:29,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 03:18:29,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:29,385 INFO L225 Difference]: With dead ends: 17 [2020-11-28 03:18:29,385 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 03:18:29,386 INFO L677 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 [2020-11-28 03:18:29,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 03:18:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:18:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:18:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2020-11-28 03:18:29,390 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 7 [2020-11-28 03:18:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:29,390 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2020-11-28 03:18:29,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:18:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2020-11-28 03:18:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:18:29,391 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:29,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:29,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:18:29,392 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:18:29,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:29,392 INFO L82 PathProgramCache]: Analyzing trace with hash 96456748, now seen corresponding path program 1 times [2020-11-28 03:18:29,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:29,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700986161] [2020-11-28 03:18:29,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:29,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:18:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:29,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700986161] [2020-11-28 03:18:29,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:29,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:18:29,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288720571] [2020-11-28 03:18:29,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:18:29,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:29,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:18:29,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:18:29,530 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand 6 states. [2020-11-28 03:18:29,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:29,646 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-11-28 03:18:29,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:18:29,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 03:18:29,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:29,652 INFO L225 Difference]: With dead ends: 16 [2020-11-28 03:18:29,652 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:18:29,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:18:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:18:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:18:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:18:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-28 03:18:29,656 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 10 [2020-11-28 03:18:29,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:29,656 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-28 03:18:29,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:18:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-28 03:18:29,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:18:29,659 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:29,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:29,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:18:29,661 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:18:29,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:29,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1304808048, now seen corresponding path program 1 times [2020-11-28 03:18:29,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:29,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200841811] [2020-11-28 03:18:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:29,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:18:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:29,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200841811] [2020-11-28 03:18:29,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:29,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:18:29,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330896048] [2020-11-28 03:18:29,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:18:29,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:29,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:18:29,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:18:29,818 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 6 states. [2020-11-28 03:18:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:29,916 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-11-28 03:18:29,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:18:29,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 03:18:29,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:29,917 INFO L225 Difference]: With dead ends: 15 [2020-11-28 03:18:29,917 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 03:18:29,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:18:29,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 03:18:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 03:18:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:18:29,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-28 03:18:29,923 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-11-28 03:18:29,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:29,924 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-28 03:18:29,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:18:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-28 03:18:29,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:18:29,924 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:29,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:29,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:18:29,928 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:18:29,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:29,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1794343762, now seen corresponding path program 1 times [2020-11-28 03:18:29,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:29,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635554079] [2020-11-28 03:18:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:30,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:18:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:30,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635554079] [2020-11-28 03:18:30,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:30,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:18:30,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417749064] [2020-11-28 03:18:30,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:18:30,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:30,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:18:30,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:18:30,063 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 6 states. [2020-11-28 03:18:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:30,129 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-11-28 03:18:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:18:30,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 03:18:30,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:30,131 INFO L225 Difference]: With dead ends: 14 [2020-11-28 03:18:30,131 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 03:18:30,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:18:30,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 03:18:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-28 03:18:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 03:18:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-11-28 03:18:30,134 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 12 [2020-11-28 03:18:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:30,134 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-11-28 03:18:30,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:18:30,134 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-11-28 03:18:30,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:18:30,135 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:30,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:30,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:18:30,135 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:18:30,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:30,136 INFO L82 PathProgramCache]: Analyzing trace with hash 209918291, now seen corresponding path program 1 times [2020-11-28 03:18:30,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:30,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936785864] [2020-11-28 03:18:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:30,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:18:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:30,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:30,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936785864] [2020-11-28 03:18:30,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:30,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:18:30,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470220397] [2020-11-28 03:18:30,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:18:30,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:30,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:18:30,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:18:30,371 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 7 states. [2020-11-28 03:18:30,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:30,475 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-11-28 03:18:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:18:30,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-28 03:18:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:30,476 INFO L225 Difference]: With dead ends: 13 [2020-11-28 03:18:30,476 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:18:30,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:18:30,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:18:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:18:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:18:30,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:18:30,478 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-28 03:18:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:30,478 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:18:30,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:18:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:18:30,479 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:18:30,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:18:30,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:18:30 BoogieIcfgContainer [2020-11-28 03:18:30,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:18:30,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:18:30,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:18:30,485 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:18:30,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:28" (3/4) ... [2020-11-28 03:18:30,489 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:18:30,496 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-28 03:18:30,496 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 03:18:30,497 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-11-28 03:18:30,497 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-11-28 03:18:30,497 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-11-28 03:18:30,497 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-11-28 03:18:30,498 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 03:18:30,498 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-11-28 03:18:30,502 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 03:18:30,503 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 03:18:30,503 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 03:18:30,503 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:18:30,539 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7b4dcafa-4a00-4c48-bf2d-af583778fc58/bin/uautomizer/witness.graphml [2020-11-28 03:18:30,539 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:18:30,541 INFO L168 Benchmark]: Toolchain (without parser) took 3350.84 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 59.8 MB in the beginning and 34.2 MB in the end (delta: 25.5 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:30,545 INFO L168 Benchmark]: CDTParser took 1.01 ms. Allocated memory is still 71.3 MB. Free memory was 37.8 MB in the beginning and 37.8 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:30,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.43 ms. Allocated memory is still 86.0 MB. Free memory was 59.5 MB in the beginning and 38.6 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:30,546 INFO L168 Benchmark]: Boogie Preprocessor took 60.33 ms. Allocated memory is still 86.0 MB. Free memory was 38.6 MB in the beginning and 36.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:30,547 INFO L168 Benchmark]: RCFGBuilder took 738.89 ms. Allocated memory is still 86.0 MB. Free memory was 36.2 MB in the beginning and 62.8 MB in the end (delta: -26.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:30,547 INFO L168 Benchmark]: TraceAbstraction took 1964.71 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 62.3 MB in the beginning and 37.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 51.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:30,548 INFO L168 Benchmark]: Witness Printer took 54.18 ms. Allocated memory is still 111.1 MB. Free memory was 37.3 MB in the beginning and 34.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:30,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01 ms. Allocated memory is still 71.3 MB. Free memory was 37.8 MB in the beginning and 37.8 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 524.43 ms. Allocated memory is still 86.0 MB. Free memory was 59.5 MB in the beginning and 38.6 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.33 ms. Allocated memory is still 86.0 MB. Free memory was 38.6 MB in the beginning and 36.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 738.89 ms. Allocated memory is still 86.0 MB. Free memory was 36.2 MB in the beginning and 62.8 MB in the end (delta: -26.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1964.71 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 62.3 MB in the beginning and 37.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 51.1 MB. Max. memory is 16.1 GB. * Witness Printer took 54.18 ms. Allocated memory is still 111.1 MB. Free memory was 37.3 MB in the beginning and 34.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 46 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 61 SDslu, 74 SDs, 0 SdLazy, 170 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 4378 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...