./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-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_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/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 10bdb405bd6bca2bddb8b686c44dad291e109402 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:58:17,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:17,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:17,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:17,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:17,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:17,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:17,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:17,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:17,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:17,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:17,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:17,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:17,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:17,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:17,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:17,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:17,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:17,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:17,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:17,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:17,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:17,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:17,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:17,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:17,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:17,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:17,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:17,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:17,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:17,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:17,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:17,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:17,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:17,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:17,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:17,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:17,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:17,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:17,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:17,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:17,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 02:58:17,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:17,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:17,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:17,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:17,652 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:17,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:17,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:17,653 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:58:17,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:17,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:17,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:17,655 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:58:17,656 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:58:17,656 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:58:17,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:17,656 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:58:17,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:17,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:17,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:17,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:17,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:17,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:17,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:17,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:17,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:17,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:17,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:17,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:17,660 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_aab891a1-b74e-4baf-8274-59ac346c307e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10bdb405bd6bca2bddb8b686c44dad291e109402 [2020-11-28 02:58:17,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:17,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:17,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:17,959 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:17,960 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:17,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2020-11-28 02:58:18,039 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/data/4d972617f/5a2b692e2ce04dc2847fd9c42579f0ca/FLAG0f7da7403 [2020-11-28 02:58:18,561 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:18,562 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2020-11-28 02:58:18,578 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/data/4d972617f/5a2b692e2ce04dc2847fd9c42579f0ca/FLAG0f7da7403 [2020-11-28 02:58:18,902 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/data/4d972617f/5a2b692e2ce04dc2847fd9c42579f0ca [2020-11-28 02:58:18,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:18,906 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:58:18,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:18,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:18,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:18,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:18" (1/1) ... [2020-11-28 02:58:18,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b042014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:18, skipping insertion in model container [2020-11-28 02:58:18,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:18" (1/1) ... [2020-11-28 02:58:18,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:18,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:19,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:19,328 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:19,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:19,463 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:19,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19 WrapperNode [2020-11-28 02:58:19,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:19,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:19,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:19,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:19,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:19,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:19,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:19,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:19,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/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 02:58:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:58:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 02:58:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 02:58:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 02:58:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 02:58:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 02:58:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemset [2020-11-28 02:58:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:58:19,614 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 02:58:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 02:58:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 02:58:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 02:58:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 02:58:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 02:58:19,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 02:58:19,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 02:58:19,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 02:58:19,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 02:58:19,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 02:58:19,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 02:58:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 02:58:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 02:58:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 02:58:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 02:58:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 02:58:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 02:58:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 02:58:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 02:58:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 02:58:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 02:58:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 02:58:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 02:58:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 02:58:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 02:58:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 02:58:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 02:58:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 02:58:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 02:58:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 02:58:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 02:58:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 02:58:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 02:58:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 02:58:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 02:58:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 02:58:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 02:58:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 02:58:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 02:58:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 02:58:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 02:58:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 02:58:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 02:58:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 02:58:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 02:58:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 02:58:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 02:58:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 02:58:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 02:58:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 02:58:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 02:58:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 02:58:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 02:58:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 02:58:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 02:58:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 02:58:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 02:58:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 02:58:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 02:58:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 02:58:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 02:58:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 02:58:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 02:58:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 02:58:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 02:58:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 02:58:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 02:58:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 02:58:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 02:58:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 02:58:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 02:58:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 02:58:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 02:58:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 02:58:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 02:58:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 02:58:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 02:58:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 02:58:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 02:58:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 02:58:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 02:58:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 02:58:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 02:58:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 02:58:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 02:58:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 02:58:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 02:58:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 02:58:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 02:58:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 02:58:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 02:58:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 02:58:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 02:58:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 02:58:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 02:58:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 02:58:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 02:58:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 02:58:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 02:58:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 02:58:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 02:58:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 02:58:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 02:58:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 02:58:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 02:58:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 02:58:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 02:58:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure cmemset [2020-11-28 02:58:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:58:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:58:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:58:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:58:20,161 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:20,163 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-28 02:58:20,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:20 BoogieIcfgContainer [2020-11-28 02:58:20,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:20,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:20,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:20,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:20,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:18" (1/3) ... [2020-11-28 02:58:20,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a92147b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:20, skipping insertion in model container [2020-11-28 02:58:20,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (2/3) ... [2020-11-28 02:58:20,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a92147b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:20, skipping insertion in model container [2020-11-28 02:58:20,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:20" (3/3) ... [2020-11-28 02:58:20,183 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cmemset-alloca-1.i [2020-11-28 02:58:20,198 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:20,203 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 02:58:20,216 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 02:58:20,244 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:20,245 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:58:20,245 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:20,251 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:20,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:20,252 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:20,252 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:20,252 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:20,269 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-28 02:58:20,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:58:20,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:20,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:20,281 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-28 02:58:20,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:20,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1505405860, now seen corresponding path program 1 times [2020-11-28 02:58:20,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:20,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630170776] [2020-11-28 02:58:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:20,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:20,669 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 02:58:20,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630170776] [2020-11-28 02:58:20,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:20,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 02:58:20,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68232828] [2020-11-28 02:58:20,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:58:20,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:20,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:58:20,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:20,705 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 9 states. [2020-11-28 02:58:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:21,109 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-11-28 02:58:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:58:21,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-11-28 02:58:21,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:21,127 INFO L225 Difference]: With dead ends: 32 [2020-11-28 02:58:21,127 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 02:58:21,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-11-28 02:58:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 02:58:21,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-28 02:58:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:58:21,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-11-28 02:58:21,168 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2020-11-28 02:58:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:21,169 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-11-28 02:58:21,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:58:21,170 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-11-28 02:58:21,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:58:21,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:21,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:21,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:21,172 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-28 02:58:21,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:21,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1505405861, now seen corresponding path program 1 times [2020-11-28 02:58:21,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:21,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964186808] [2020-11-28 02:58:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:21,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:21,323 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 02:58:21,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964186808] [2020-11-28 02:58:21,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:21,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:58:21,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808434041] [2020-11-28 02:58:21,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:58:21,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:21,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:58:21,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:21,326 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 8 states. [2020-11-28 02:58:21,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:21,589 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-28 02:58:21,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:58:21,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-28 02:58:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:21,592 INFO L225 Difference]: With dead ends: 29 [2020-11-28 02:58:21,592 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 02:58:21,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:21,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 02:58:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-11-28 02:58:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 02:58:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-11-28 02:58:21,598 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2020-11-28 02:58:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:21,598 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-11-28 02:58:21,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:58:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-11-28 02:58:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:58:21,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:21,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:21,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:21,600 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-28 02:58:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:21,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1092272849, now seen corresponding path program 1 times [2020-11-28 02:58:21,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:21,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949829481] [2020-11-28 02:58:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:21,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:21,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-28 02:58:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:21,745 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 02:58:21,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949829481] [2020-11-28 02:58:21,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:21,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:58:21,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645894940] [2020-11-28 02:58:21,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:21,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:21,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:21,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:21,748 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2020-11-28 02:58:22,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:22,028 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-28 02:58:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:58:22,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-11-28 02:58:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:22,031 INFO L225 Difference]: With dead ends: 39 [2020-11-28 02:58:22,031 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 02:58:22,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:58:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 02:58:22,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-11-28 02:58:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 02:58:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-11-28 02:58:22,043 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2020-11-28 02:58:22,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:22,044 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-11-28 02:58:22,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-11-28 02:58:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:58:22,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:22,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:22,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:58:22,049 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-28 02:58:22,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:22,049 INFO L82 PathProgramCache]: Analyzing trace with hash 699245839, now seen corresponding path program 1 times [2020-11-28 02:58:22,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:22,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875325537] [2020-11-28 02:58:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:22,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-28 02:58:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:22,173 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 02:58:22,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875325537] [2020-11-28 02:58:22,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:22,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 02:58:22,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595842581] [2020-11-28 02:58:22,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:58:22,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:22,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:58:22,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:22,175 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 8 states. [2020-11-28 02:58:22,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:22,464 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-28 02:58:22,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 02:58:22,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-28 02:58:22,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:22,466 INFO L225 Difference]: With dead ends: 33 [2020-11-28 02:58:22,466 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 02:58:22,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-28 02:58:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 02:58:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2020-11-28 02:58:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 02:58:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-11-28 02:58:22,471 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2020-11-28 02:58:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:22,471 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-11-28 02:58:22,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:58:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-11-28 02:58:22,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:22,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:22,472 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:22,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:58:22,472 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-28 02:58:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:22,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1853612607, now seen corresponding path program 1 times [2020-11-28 02:58:22,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:22,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183727839] [2020-11-28 02:58:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:22,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183727839] [2020-11-28 02:58:22,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:22,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:58:22,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831831081] [2020-11-28 02:58:22,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:22,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:22,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:22,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:22,642 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2020-11-28 02:58:22,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:22,866 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-11-28 02:58:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:58:22,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 02:58:22,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:22,868 INFO L225 Difference]: With dead ends: 41 [2020-11-28 02:58:22,868 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 02:58:22,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:58:22,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 02:58:22,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-11-28 02:58:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-28 02:58:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-11-28 02:58:22,873 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 19 [2020-11-28 02:58:22,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:22,874 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-11-28 02:58:22,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-11-28 02:58:22,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:22,875 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:22,875 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:22,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:58:22,880 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-28 02:58:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:22,880 INFO L82 PathProgramCache]: Analyzing trace with hash 2111778045, now seen corresponding path program 1 times [2020-11-28 02:58:22,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:22,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522905933] [2020-11-28 02:58:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:23,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:23,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522905933] [2020-11-28 02:58:23,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986379342] [2020-11-28 02:58:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:23,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-28 02:58:23,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:23,472 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:58:23,474 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:23,482 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:23,483 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:23,483 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-28 02:58:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:23,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:23,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2020-11-28 02:58:23,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932393975] [2020-11-28 02:58:23,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-28 02:58:23,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:23,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-28 02:58:23,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-11-28 02:58:23,866 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 21 states. [2020-11-28 02:58:24,301 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-11-28 02:58:24,438 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-11-28 02:58:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:25,004 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-11-28 02:58:25,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 02:58:25,005 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2020-11-28 02:58:25,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:25,006 INFO L225 Difference]: With dead ends: 44 [2020-11-28 02:58:25,007 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 02:58:25,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2020-11-28 02:58:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 02:58:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-28 02:58:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 02:58:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-11-28 02:58:25,023 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 19 [2020-11-28 02:58:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:25,024 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-11-28 02:58:25,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-28 02:58:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-11-28 02:58:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:58:25,027 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:25,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:25,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 02:58:25,240 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-28 02:58:25,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:25,240 INFO L82 PathProgramCache]: Analyzing trace with hash 538552420, now seen corresponding path program 1 times [2020-11-28 02:58:25,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:25,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496887921] [2020-11-28 02:58:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:25,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:25,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-28 02:58:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:25,363 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 02:58:25,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496887921] [2020-11-28 02:58:25,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:25,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:25,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457343451] [2020-11-28 02:58:25,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:25,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:25,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:25,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:25,368 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 6 states. [2020-11-28 02:58:25,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:25,478 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-11-28 02:58:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:25,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-28 02:58:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:25,479 INFO L225 Difference]: With dead ends: 42 [2020-11-28 02:58:25,479 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 02:58:25,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:25,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 02:58:25,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 02:58:25,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 02:58:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-11-28 02:58:25,483 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2020-11-28 02:58:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:25,483 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-11-28 02:58:25,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:25,483 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-11-28 02:58:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:58:25,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:25,484 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:25,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:58:25,484 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-28 02:58:25,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:25,485 INFO L82 PathProgramCache]: Analyzing trace with hash 402998846, now seen corresponding path program 2 times [2020-11-28 02:58:25,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:25,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238226815] [2020-11-28 02:58:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:26,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:26,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238226815] [2020-11-28 02:58:26,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181676142] [2020-11-28 02:58:26,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:26,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:58:26,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:26,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-28 02:58:26,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:26,188 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:58:26,188 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:26,197 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:26,197 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:26,197 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-28 02:58:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:26,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:26,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2020-11-28 02:58:26,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549694200] [2020-11-28 02:58:26,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-28 02:58:26,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:26,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-28 02:58:26,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2020-11-28 02:58:26,916 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 28 states. [2020-11-28 02:58:28,527 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-11-28 02:58:28,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:28,876 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-11-28 02:58:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-28 02:58:28,877 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 24 [2020-11-28 02:58:28,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:28,878 INFO L225 Difference]: With dead ends: 36 [2020-11-28 02:58:28,878 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 02:58:28,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=219, Invalid=1851, Unknown=0, NotChecked=0, Total=2070 [2020-11-28 02:58:28,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 02:58:28,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-28 02:58:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 02:58:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-11-28 02:58:28,883 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2020-11-28 02:58:28,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:28,884 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-11-28 02:58:28,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-28 02:58:28,884 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-11-28 02:58:28,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-28 02:58:28,885 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:28,885 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:29,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:29,095 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-28 02:58:29,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:29,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1008858722, now seen corresponding path program 3 times [2020-11-28 02:58:29,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:29,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856297932] [2020-11-28 02:58:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:29,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856297932] [2020-11-28 02:58:29,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697581998] [2020-11-28 02:58:29,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:29,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-28 02:58:29,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:29,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 66 conjunts are in the unsatisfiable core [2020-11-28 02:58:29,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:29,782 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:58:29,782 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:29,786 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:29,786 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:29,787 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 02:58:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:30,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:30,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2020-11-28 02:58:30,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583070760] [2020-11-28 02:58:30,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-28 02:58:30,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:30,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-28 02:58:30,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2020-11-28 02:58:30,387 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 34 states. [2020-11-28 02:58:31,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:31,829 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-28 02:58:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-28 02:58:31,830 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2020-11-28 02:58:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:31,830 INFO L225 Difference]: With dead ends: 40 [2020-11-28 02:58:31,831 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:58:31,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=315, Invalid=2547, Unknown=0, NotChecked=0, Total=2862 [2020-11-28 02:58:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:58:31,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:58:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:58:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:58:31,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-11-28 02:58:31,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:31,833 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:31,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-28 02:58:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:31,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:58:32,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:32,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:32 BoogieIcfgContainer [2020-11-28 02:58:32,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:32,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:32,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:32,048 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:32,049 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:20" (3/4) ... [2020-11-28 02:58:32,051 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:58:32,057 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 02:58:32,057 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-11-28 02:58:32,058 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-11-28 02:58:32,058 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-11-28 02:58:32,058 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-11-28 02:58:32,058 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 02:58:32,058 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemset [2020-11-28 02:58:32,058 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-11-28 02:58:32,065 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 02:58:32,066 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 02:58:32,066 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:32,066 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:32,103 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_aab891a1-b74e-4baf-8274-59ac346c307e/bin/uautomizer/witness.graphml [2020-11-28 02:58:32,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:32,105 INFO L168 Benchmark]: Toolchain (without parser) took 13198.31 ms. Allocated memory was 100.7 MB in the beginning and 180.4 MB in the end (delta: 79.7 MB). Free memory was 69.2 MB in the beginning and 56.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 91.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:32,105 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory is still 38.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:32,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.79 ms. Allocated memory is still 100.7 MB. Free memory was 68.6 MB in the beginning and 67.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:32,106 INFO L168 Benchmark]: Boogie Preprocessor took 81.63 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 64.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:32,107 INFO L168 Benchmark]: RCFGBuilder took 619.52 ms. Allocated memory is still 100.7 MB. Free memory was 64.2 MB in the beginning and 69.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:32,107 INFO L168 Benchmark]: TraceAbstraction took 11877.68 ms. Allocated memory was 100.7 MB in the beginning and 180.4 MB in the end (delta: 79.7 MB). Free memory was 69.2 MB in the beginning and 58.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 89.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:32,108 INFO L168 Benchmark]: Witness Printer took 56.10 ms. Allocated memory is still 180.4 MB. Free memory was 58.8 MB in the beginning and 56.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:32,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory is still 38.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 548.79 ms. Allocated memory is still 100.7 MB. Free memory was 68.6 MB in the beginning and 67.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.63 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 64.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 619.52 ms. Allocated memory is still 100.7 MB. Free memory was 64.2 MB in the beginning and 69.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11877.68 ms. Allocated memory was 100.7 MB in the beginning and 180.4 MB in the end (delta: 79.7 MB). Free memory was 69.2 MB in the beginning and 58.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 89.0 MB. Max. memory is 16.1 GB. * Witness Printer took 56.10 ms. Allocated memory is still 180.4 MB. Free memory was 58.8 MB in the beginning and 56.2 MB in the end (delta: 2.6 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: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 43 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.8s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 425 SDslu, 399 SDs, 0 SdLazy, 1800 SolverSat, 164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 22 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 245 ConstructedInterpolants, 0 QuantifiedInterpolants, 54731 SizeOfPredicates, 35 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 17/100 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...