./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/count_down-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_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/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 3e28603c63113c1566dc2e06da17c63059f80486 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:15:26,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:15:26,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:15:26,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:15:26,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:15:26,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:15:26,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:15:26,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:15:26,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:15:26,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:15:26,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:15:26,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:15:26,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:15:26,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:15:26,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:15:26,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:15:26,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:15:26,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:15:26,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:15:26,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:15:26,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:15:26,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:15:26,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:15:26,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:15:26,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:15:26,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:15:26,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:15:26,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:15:26,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:15:26,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:15:26,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:15:26,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:15:26,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:15:26,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:15:26,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:15:26,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:15:26,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:15:26,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:15:26,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:15:26,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:15:26,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:15:26,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:15:26,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:15:26,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:15:26,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:15:26,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:15:26,629 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:15:26,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:15:26,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:15:26,630 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:15:26,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:15:26,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:15:26,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:15:26,632 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:15:26,633 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:15:26,633 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:15:26,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:15:26,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:15:26,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:15:26,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:15:26,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:15:26,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:15:26,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:15:26,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:15:26,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:15:26,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:15:26,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:15:26,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:15:26,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:15:26,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:15:26,637 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_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e28603c63113c1566dc2e06da17c63059f80486 [2020-11-28 03:15:27,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:15:27,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:15:27,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:15:27,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:15:27,067 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:15:27,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-11-28 03:15:27,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/data/d4cab0b4a/1142c5669a6b44e59dea1c5f6dcff087/FLAG5c93b6ae6 [2020-11-28 03:15:27,856 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:15:27,857 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-11-28 03:15:27,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/data/d4cab0b4a/1142c5669a6b44e59dea1c5f6dcff087/FLAG5c93b6ae6 [2020-11-28 03:15:28,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/data/d4cab0b4a/1142c5669a6b44e59dea1c5f6dcff087 [2020-11-28 03:15:28,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:15:28,175 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:15:28,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:28,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:15:28,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:15:28,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5c085e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28, skipping insertion in model container [2020-11-28 03:15:28,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:15:28,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:15:28,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:28,661 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:15:28,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:28,805 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:15:28,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28 WrapperNode [2020-11-28 03:15:28,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:28,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:15:28,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:15:28,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:15:28,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:15:28,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:15:28,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:15:28,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:15:28,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:15:29,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:15:29,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:15:29,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:15:29,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:15:29,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:15:29,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:15:29,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:15:29,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:15:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:15:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:15:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:15:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:15:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:15:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:15:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:15:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:15:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:15:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:15:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:15:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:15:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:15:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:15:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:15:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:15:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:15:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:15:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:15:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:15:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:15:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:15:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:15:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:15:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:15:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:15:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:15:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:15:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:15:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:15:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:15:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:15:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:15:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:15:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:15:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:15:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:15:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:15:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:15:29,024 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:15:29,024 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:15:29,024 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:15:29,024 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:15:29,024 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:15:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:15:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:15:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:15:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:15:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:15:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:15:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:15:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:15:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:15:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:15:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:15:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:15:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:15:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:15:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:15:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:15:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:15:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:15:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:15:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:15:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:15:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:15:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:15:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:15:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:15:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:15:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:15:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:15:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:15:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:15:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:15:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:15:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:15:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:15:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:15:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:15:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:15:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:15:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:15:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:15:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:15:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:15:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:15:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:15:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:15:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:15:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:15:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:15:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:15:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:15:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:15:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:15:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:15:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:15:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:15:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:15:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:15:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:15:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:15:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:15:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:15:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:15:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:15:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:15:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:15:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:15:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:15:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:15:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:15:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:15:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:15:29,769 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:15:29,769 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-28 03:15:29,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:29 BoogieIcfgContainer [2020-11-28 03:15:29,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:15:29,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:15:29,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:15:29,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:15:29,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:28" (1/3) ... [2020-11-28 03:15:29,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e860a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:29, skipping insertion in model container [2020-11-28 03:15:29,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (2/3) ... [2020-11-28 03:15:29,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e860a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:29, skipping insertion in model container [2020-11-28 03:15:29,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:29" (3/3) ... [2020-11-28 03:15:29,790 INFO L111 eAbstractionObserver]: Analyzing ICFG count_down-alloca-1.i [2020-11-28 03:15:29,803 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:15:29,810 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-11-28 03:15:29,825 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-11-28 03:15:29,854 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:15:29,855 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:15:29,855 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:15:29,856 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:15:29,857 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:15:29,863 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:15:29,863 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:15:29,863 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:15:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-11-28 03:15:29,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:15:29,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:29,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:29,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:15:29,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:29,910 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2020-11-28 03:15:29,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:29,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865443760] [2020-11-28 03:15:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:30,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:15:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:30,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865443760] [2020-11-28 03:15:30,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:30,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:15:30,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178194751] [2020-11-28 03:15:30,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:15:30,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:30,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:15:30,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:15:30,231 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-11-28 03:15:30,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:30,435 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-11-28 03:15:30,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:15:30,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:15:30,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:30,461 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:15:30,466 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 03:15:30,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 03:15:30,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-28 03:15:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:15:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-11-28 03:15:30,508 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2020-11-28 03:15:30,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:30,508 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-28 03:15:30,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:15:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-11-28 03:15:30,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:15:30,509 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:30,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:30,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:15:30,510 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:15:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:30,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2020-11-28 03:15:30,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:30,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149468269] [2020-11-28 03:15:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:30,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:15:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:30,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149468269] [2020-11-28 03:15:30,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:30,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:15:30,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992661747] [2020-11-28 03:15:30,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:15:30,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:30,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:15:30,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:15:30,622 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-11-28 03:15:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:30,737 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-11-28 03:15:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:15:30,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:15:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:30,739 INFO L225 Difference]: With dead ends: 29 [2020-11-28 03:15:30,739 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:15:30,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:15:30,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:15:30,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 03:15:30,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:15:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-11-28 03:15:30,744 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2020-11-28 03:15:30,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:30,744 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-11-28 03:15:30,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:15:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-11-28 03:15:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:15:30,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:30,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:30,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:15:30,746 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:15:30,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:30,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2020-11-28 03:15:30,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:30,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199399494] [2020-11-28 03:15:30,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:30,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:15:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:30,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199399494] [2020-11-28 03:15:30,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:30,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:15:30,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005780233] [2020-11-28 03:15:30,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:15:30,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:30,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:15:30,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:15:30,874 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-11-28 03:15:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:31,107 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-11-28 03:15:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:15:31,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 03:15:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:31,109 INFO L225 Difference]: With dead ends: 33 [2020-11-28 03:15:31,110 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 03:15:31,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:15:31,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 03:15:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-11-28 03:15:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 03:15:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-11-28 03:15:31,116 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2020-11-28 03:15:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:31,117 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-11-28 03:15:31,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:15:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-11-28 03:15:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:15:31,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:31,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:31,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:15:31,119 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:15:31,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:31,120 INFO L82 PathProgramCache]: Analyzing trace with hash 467596310, now seen corresponding path program 1 times [2020-11-28 03:15:31,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:31,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139015234] [2020-11-28 03:15:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:31,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:15:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:31,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139015234] [2020-11-28 03:15:31,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671365579] [2020-11-28 03:15:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/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 03:15:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:31,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:15:31,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:31,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:15:31,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2020-11-28 03:15:31,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935291610] [2020-11-28 03:15:31,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:15:31,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:31,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:15:31,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:15:31,673 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2020-11-28 03:15:31,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:31,752 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-11-28 03:15:31,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:15:31,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 03:15:31,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:31,755 INFO L225 Difference]: With dead ends: 54 [2020-11-28 03:15:31,755 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 03:15:31,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:15:31,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 03:15:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-11-28 03:15:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 03:15:31,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-11-28 03:15:31,770 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 16 [2020-11-28 03:15:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:31,771 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-11-28 03:15:31,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:15:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-11-28 03:15:31,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:15:31,772 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:31,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:32,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:32,000 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:15:32,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:32,001 INFO L82 PathProgramCache]: Analyzing trace with hash 74569300, now seen corresponding path program 1 times [2020-11-28 03:15:32,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:32,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651885130] [2020-11-28 03:15:32,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:32,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:15:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:32,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651885130] [2020-11-28 03:15:32,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429603783] [2020-11-28 03:15:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/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 03:15:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:32,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:15:32,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:32,523 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 8 treesize of output 7 [2020-11-28 03:15:32,524 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:15:32,541 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:15:32,542 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:15:32,542 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-11-28 03:15:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:32,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:15:32,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2020-11-28 03:15:32,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59336393] [2020-11-28 03:15:32,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:15:32,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:32,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:15:32,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:15:32,638 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 9 states. [2020-11-28 03:15:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:32,874 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-11-28 03:15:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:15:32,875 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-11-28 03:15:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:32,876 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:15:32,876 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 03:15:32,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:15:32,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 03:15:32,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-11-28 03:15:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 03:15:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-11-28 03:15:32,882 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2020-11-28 03:15:32,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:32,883 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-11-28 03:15:32,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:15:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-11-28 03:15:32,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:15:32,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:32,884 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 03:15:33,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:33,104 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:15:33,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:33,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1610534241, now seen corresponding path program 1 times [2020-11-28 03:15:33,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:33,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006042169] [2020-11-28 03:15:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:33,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:15:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:33,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006042169] [2020-11-28 03:15:33,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394548063] [2020-11-28 03:15:33,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/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 03:15:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:33,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:15:33,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:33,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:15:33,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2020-11-28 03:15:33,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869885082] [2020-11-28 03:15:33,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:15:33,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:33,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:15:33,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:15:33,469 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 11 states. [2020-11-28 03:15:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:33,749 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-11-28 03:15:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:15:33,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-11-28 03:15:33,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:33,751 INFO L225 Difference]: With dead ends: 50 [2020-11-28 03:15:33,751 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:15:33,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:15:33,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:15:33,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-11-28 03:15:33,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 03:15:33,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-11-28 03:15:33,758 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2020-11-28 03:15:33,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:33,758 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-11-28 03:15:33,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:15:33,758 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-11-28 03:15:33,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:15:33,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:33,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:33,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:33,960 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:15:33,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:33,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1613047272, now seen corresponding path program 1 times [2020-11-28 03:15:33,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:33,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156798410] [2020-11-28 03:15:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:34,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:15:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:15:34,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156798410] [2020-11-28 03:15:34,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:34,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:15:34,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560226822] [2020-11-28 03:15:34,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:15:34,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:34,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:15:34,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:34,054 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2020-11-28 03:15:34,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:34,177 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-11-28 03:15:34,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:15:34,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:15:34,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:34,179 INFO L225 Difference]: With dead ends: 44 [2020-11-28 03:15:34,179 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 03:15:34,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:15:34,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 03:15:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-28 03:15:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 03:15:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-11-28 03:15:34,185 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2020-11-28 03:15:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:34,185 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-11-28 03:15:34,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:15:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-11-28 03:15:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:15:34,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:34,186 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:34,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:15:34,187 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:15:34,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:34,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2133289012, now seen corresponding path program 1 times [2020-11-28 03:15:34,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:34,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365303193] [2020-11-28 03:15:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:34,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:15:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:15:34,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365303193] [2020-11-28 03:15:34,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146059561] [2020-11-28 03:15:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:34,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:15:34,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:15:34,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:15:34,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2020-11-28 03:15:34,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673207362] [2020-11-28 03:15:34,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:15:34,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:34,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:15:34,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:15:34,489 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2020-11-28 03:15:34,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:34,548 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-11-28 03:15:34,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:15:34,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-28 03:15:34,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:34,549 INFO L225 Difference]: With dead ends: 56 [2020-11-28 03:15:34,549 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:15:34,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 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 03:15:34,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:15:34,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-11-28 03:15:34,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 03:15:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-11-28 03:15:34,555 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 21 [2020-11-28 03:15:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:34,555 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-11-28 03:15:34,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:15:34,555 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-11-28 03:15:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:15:34,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:34,562 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:34,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:34,780 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:15:34,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:34,781 INFO L82 PathProgramCache]: Analyzing trace with hash 853425334, now seen corresponding path program 1 times [2020-11-28 03:15:34,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:34,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034364051] [2020-11-28 03:15:34,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:34,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:15:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:34,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034364051] [2020-11-28 03:15:34,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734218591] [2020-11-28 03:15:34,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:35,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:15:35,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:35,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:15:35,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-11-28 03:15:35,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742706405] [2020-11-28 03:15:35,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:15:35,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:35,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:15:35,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:15:35,151 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 11 states. [2020-11-28 03:15:35,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:35,377 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-11-28 03:15:35,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:15:35,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-11-28 03:15:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:35,379 INFO L225 Difference]: With dead ends: 73 [2020-11-28 03:15:35,379 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 03:15:35,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:15:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 03:15:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 57. [2020-11-28 03:15:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:15:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-11-28 03:15:35,386 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 21 [2020-11-28 03:15:35,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:35,386 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-11-28 03:15:35,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:15:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-11-28 03:15:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:15:35,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:35,387 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 03:15:35,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:35,606 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:15:35,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:35,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1707448741, now seen corresponding path program 1 times [2020-11-28 03:15:35,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:35,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350601896] [2020-11-28 03:15:35,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:35,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:15:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:15:35,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350601896] [2020-11-28 03:15:35,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:35,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:15:35,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473082564] [2020-11-28 03:15:35,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:15:35,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:35,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:15:35,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:35,687 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 5 states. [2020-11-28 03:15:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:35,716 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-11-28 03:15:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:15:35,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-28 03:15:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:35,717 INFO L225 Difference]: With dead ends: 56 [2020-11-28 03:15:35,717 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 03:15:35,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 03:15:35,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 03:15:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 03:15:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-11-28 03:15:35,721 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 22 [2020-11-28 03:15:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:35,722 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-11-28 03:15:35,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:15:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-11-28 03:15:35,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:15:35,723 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:35,723 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:35,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:15:35,723 INFO L429 AbstractCegarLoop]: === Iteration 11 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:15:35,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:35,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1009154207, now seen corresponding path program 2 times [2020-11-28 03:15:35,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:35,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021283725] [2020-11-28 03:15:35,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:35,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:15:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:35,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021283725] [2020-11-28 03:15:35,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416282850] [2020-11-28 03:15:35,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:36,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:15:36,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:15:36,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:15:36,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:36,031 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 8 treesize of output 7 [2020-11-28 03:15:36,032 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:15:36,045 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:15:36,045 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:15:36,045 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-11-28 03:15:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 03:15:36,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:15:36,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2020-11-28 03:15:36,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896398257] [2020-11-28 03:15:36,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:15:36,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:36,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:15:36,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:15:36,201 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 13 states. [2020-11-28 03:15:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:36,516 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-11-28 03:15:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:15:36,521 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-11-28 03:15:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:36,521 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:15:36,521 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:15:36,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:15:36,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:15:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:15:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:15:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:15:36,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-11-28 03:15:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:36,522 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:15:36,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:15:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:15:36,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:15:36,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:36,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:15:36 BoogieIcfgContainer [2020-11-28 03:15:36,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:15:36,727 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:15:36,727 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:15:36,728 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:15:36,728 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:29" (3/4) ... [2020-11-28 03:15:36,731 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:15:36,738 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 03:15:36,738 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-11-28 03:15:36,738 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-11-28 03:15:36,739 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-11-28 03:15:36,739 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-11-28 03:15:36,739 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 03:15:36,739 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-11-28 03:15:36,743 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 03:15:36,744 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 03:15:36,744 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:15:36,744 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:15:36,809 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2a9ae4c9-9795-4e8e-a5f9-201944ab8951/bin/uautomizer/witness.graphml [2020-11-28 03:15:36,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:15:36,811 INFO L168 Benchmark]: Toolchain (without parser) took 8635.40 ms. Allocated memory was 100.7 MB in the beginning and 159.4 MB in the end (delta: 58.7 MB). Free memory was 71.2 MB in the beginning and 64.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 66.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:36,812 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 81.8 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:36,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.66 ms. Allocated memory is still 100.7 MB. Free memory was 71.0 MB in the beginning and 51.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:36,813 INFO L168 Benchmark]: Boogie Preprocessor took 129.68 ms. Allocated memory is still 100.7 MB. Free memory was 51.0 MB in the beginning and 78.0 MB in the end (delta: -27.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:36,813 INFO L168 Benchmark]: RCFGBuilder took 831.70 ms. Allocated memory is still 100.7 MB. Free memory was 78.0 MB in the beginning and 72.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:36,814 INFO L168 Benchmark]: TraceAbstraction took 6953.67 ms. Allocated memory was 100.7 MB in the beginning and 159.4 MB in the end (delta: 58.7 MB). Free memory was 71.5 MB in the beginning and 67.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 63.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:36,814 INFO L168 Benchmark]: Witness Printer took 82.50 ms. Allocated memory is still 159.4 MB. Free memory was 67.6 MB in the beginning and 64.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:36,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 81.8 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 629.66 ms. Allocated memory is still 100.7 MB. Free memory was 71.0 MB in the beginning and 51.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 129.68 ms. Allocated memory is still 100.7 MB. Free memory was 51.0 MB in the beginning and 78.0 MB in the end (delta: -27.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 831.70 ms. Allocated memory is still 100.7 MB. Free memory was 78.0 MB in the beginning and 72.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6953.67 ms. Allocated memory was 100.7 MB in the beginning and 159.4 MB in the end (delta: 58.7 MB). Free memory was 71.5 MB in the beginning and 67.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 63.0 MB. Max. memory is 16.1 GB. * Witness Printer took 82.50 ms. Allocated memory is still 159.4 MB. Free memory was 67.6 MB in the beginning and 64.6 MB in the end (delta: 3.0 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: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 51 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 567 SDslu, 425 SDs, 0 SdLazy, 782 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=9, 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, 11 MinimizatonAttempts, 46 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 28335 SizeOfPredicates, 15 NumberOfNonLiveVariables, 452 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 24/45 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...