./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.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_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/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 822411a57a10ce043cb0121fce52bdc7e9506783 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:34,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:34,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:34,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:34,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:34,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:34,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:34,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:34,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:34,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:34,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:34,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:34,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:34,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:34,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:34,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:34,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:34,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:34,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:34,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:34,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:34,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:34,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:34,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:34,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:34,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:34,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:34,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:34,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:34,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:34,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:34,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:34,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:34,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:34,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:34,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:34,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:34,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:34,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:34,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:34,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:34,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 02:56:34,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:34,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:34,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:34,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:34,615 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:34,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:34,615 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:34,615 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:34,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:34,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:34,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:34,617 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:56:34,617 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:56:34,618 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:56:34,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:34,618 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:56:34,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:34,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:34,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:34,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:34,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:34,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:34,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:34,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:34,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:34,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:34,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:34,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:34,621 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_1d9b30be-e0c5-4746-acc2-322048475a9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 822411a57a10ce043cb0121fce52bdc7e9506783 [2020-11-28 02:56:34,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:34,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:34,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:34,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:34,909 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:34,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-11-28 02:56:34,999 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/data/ba4031402/1bd97e7ff9fe4bba8fcec3ca32dcc06d/FLAG837aa3013 [2020-11-28 02:56:35,504 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:35,504 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-11-28 02:56:35,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/data/ba4031402/1bd97e7ff9fe4bba8fcec3ca32dcc06d/FLAG837aa3013 [2020-11-28 02:56:35,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/data/ba4031402/1bd97e7ff9fe4bba8fcec3ca32dcc06d [2020-11-28 02:56:35,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:35,832 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:56:35,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:35,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:35,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:35,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:35" (1/1) ... [2020-11-28 02:56:35,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ae23e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:35, skipping insertion in model container [2020-11-28 02:56:35,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:35" (1/1) ... [2020-11-28 02:56:35,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:35,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:36,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,187 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:36,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,307 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:36,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36 WrapperNode [2020-11-28 02:56:36,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:36,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:36,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:36,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:36,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:36,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:36,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:36,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:56:36,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:36,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 02:56:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 02:56:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 02:56:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 02:56:36,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 02:56:36,436 INFO L138 BoogieDeclarations]: Found implementation of procedure cbzero [2020-11-28 02:56:36,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:56:36,437 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 02:56:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 02:56:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 02:56:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 02:56:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 02:56:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 02:56:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 02:56:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 02:56:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 02:56:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 02:56:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 02:56:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 02:56:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 02:56:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 02:56:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 02:56:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 02:56:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 02:56:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 02:56:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 02:56:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 02:56:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 02:56:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 02:56:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 02:56:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 02:56:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 02:56:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 02:56:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 02:56:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 02:56:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 02:56:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 02:56:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 02:56:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 02:56:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 02:56:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 02:56:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 02:56:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 02:56:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 02:56:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 02:56:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 02:56:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 02:56:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 02:56:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 02:56:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 02:56:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 02:56:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 02:56:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 02:56:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 02:56:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 02:56:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 02:56:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 02:56:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 02:56:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 02:56:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 02:56:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 02:56:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 02:56:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 02:56:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 02:56:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 02:56:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 02:56:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 02:56:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 02:56:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 02:56:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 02:56:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 02:56:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 02:56:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 02:56:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 02:56:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 02:56:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 02:56:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 02:56:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 02:56:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 02:56:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 02:56:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 02:56:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 02:56:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 02:56:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 02:56:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 02:56:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 02:56:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 02:56:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 02:56:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 02:56:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 02:56:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 02:56:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 02:56:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 02:56:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 02:56:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 02:56:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 02:56:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 02:56:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 02:56:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 02:56:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 02:56:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 02:56:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 02:56:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 02:56:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 02:56:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 02:56:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 02:56:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 02:56:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 02:56:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 02:56:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 02:56:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 02:56:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 02:56:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 02:56:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 02:56:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 02:56:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure cbzero [2020-11-28 02:56:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:56:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:56:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:56:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:56:36,975 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:36,977 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-28 02:56:36,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:36 BoogieIcfgContainer [2020-11-28 02:56:36,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:36,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:36,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:36,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:36,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:35" (1/3) ... [2020-11-28 02:56:36,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da45c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:36, skipping insertion in model container [2020-11-28 02:56:36,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (2/3) ... [2020-11-28 02:56:36,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da45c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:36, skipping insertion in model container [2020-11-28 02:56:36,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:36" (3/3) ... [2020-11-28 02:56:36,993 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2020-11-28 02:56:37,010 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:37,016 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 02:56:37,027 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 02:56:37,060 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:37,060 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:56:37,061 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:37,066 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:37,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:37,066 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:37,067 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:37,067 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-28 02:56:37,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:56:37,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:37,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:37,090 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:37,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:37,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1664038058, now seen corresponding path program 1 times [2020-11-28 02:56:37,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:37,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542295757] [2020-11-28 02:56:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:37,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:37,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542295757] [2020-11-28 02:56:37,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:37,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:37,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281031899] [2020-11-28 02:56:37,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:37,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:37,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:37,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:37,322 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-11-28 02:56:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:37,518 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-28 02:56:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:37,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 02:56:37,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:37,527 INFO L225 Difference]: With dead ends: 28 [2020-11-28 02:56:37,527 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 02:56:37,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 02:56:37,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-28 02:56:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 02:56:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-28 02:56:37,573 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2020-11-28 02:56:37,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:37,573 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-28 02:56:37,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-28 02:56:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:56:37,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:37,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:37,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:37,574 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:37,575 INFO L82 PathProgramCache]: Analyzing trace with hash 469198071, now seen corresponding path program 1 times [2020-11-28 02:56:37,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:37,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801866220] [2020-11-28 02:56:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:37,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801866220] [2020-11-28 02:56:37,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:37,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:56:37,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421041792] [2020-11-28 02:56:37,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:37,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:37,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:37,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:37,717 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 7 states. [2020-11-28 02:56:37,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:37,887 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-11-28 02:56:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:56:37,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-28 02:56:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:37,888 INFO L225 Difference]: With dead ends: 21 [2020-11-28 02:56:37,889 INFO L226 Difference]: Without dead ends: 21 [2020-11-28 02:56:37,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:56:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-28 02:56:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-28 02:56:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 02:56:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-11-28 02:56:37,893 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2020-11-28 02:56:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:37,893 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-28 02:56:37,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-11-28 02:56:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:56:37,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:37,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:37,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:37,895 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:37,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:37,895 INFO L82 PathProgramCache]: Analyzing trace with hash 469198072, now seen corresponding path program 1 times [2020-11-28 02:56:37,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:37,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840170226] [2020-11-28 02:56:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840170226] [2020-11-28 02:56:38,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:56:38,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287192930] [2020-11-28 02:56:38,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:56:38,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:56:38,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:38,099 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2020-11-28 02:56:38,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,360 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2020-11-28 02:56:38,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:56:38,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-28 02:56:38,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,364 INFO L225 Difference]: With dead ends: 27 [2020-11-28 02:56:38,364 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 02:56:38,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:56:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 02:56:38,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-11-28 02:56:38,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 02:56:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-28 02:56:38,375 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2020-11-28 02:56:38,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,375 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-28 02:56:38,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:56:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-28 02:56:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:56:38,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:38,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:56:38,379 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:38,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2054568730, now seen corresponding path program 1 times [2020-11-28 02:56:38,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114614885] [2020-11-28 02:56:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-28 02:56:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114614885] [2020-11-28 02:56:38,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 02:56:38,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235634940] [2020-11-28 02:56:38,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:56:38,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:56:38,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:38,574 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 8 states. [2020-11-28 02:56:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,858 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-11-28 02:56:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:56:38,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-28 02:56:38,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,860 INFO L225 Difference]: With dead ends: 34 [2020-11-28 02:56:38,860 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 02:56:38,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-11-28 02:56:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 02:56:38,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-11-28 02:56:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 02:56:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-11-28 02:56:38,872 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-11-28 02:56:38,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,872 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-11-28 02:56:38,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:56:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-11-28 02:56:38,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:56:38,875 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:38,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:56:38,875 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:38,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1661541720, now seen corresponding path program 1 times [2020-11-28 02:56:38,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055539189] [2020-11-28 02:56:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-28 02:56:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:39,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055539189] [2020-11-28 02:56:39,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:39,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-28 02:56:39,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968425964] [2020-11-28 02:56:39,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:56:39,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:39,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:56:39,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:56:39,058 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 9 states. [2020-11-28 02:56:39,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:39,316 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-28 02:56:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 02:56:39,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-28 02:56:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:39,318 INFO L225 Difference]: With dead ends: 28 [2020-11-28 02:56:39,318 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 02:56:39,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-11-28 02:56:39,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 02:56:39,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-11-28 02:56:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 02:56:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-11-28 02:56:39,322 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2020-11-28 02:56:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:39,322 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-11-28 02:56:39,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:56:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-11-28 02:56:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:56:39,323 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:39,323 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:39,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:56:39,324 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:39,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:39,324 INFO L82 PathProgramCache]: Analyzing trace with hash -684268688, now seen corresponding path program 1 times [2020-11-28 02:56:39,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:39,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352276962] [2020-11-28 02:56:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:39,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:39,513 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 02:56:39,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352276962] [2020-11-28 02:56:39,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678573565] [2020-11-28 02:56:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:39,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 02:56:39,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:39,940 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 02:56:39,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:39,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-11-28 02:56:39,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476613647] [2020-11-28 02:56:39,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:56:39,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:39,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:56:39,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:56:39,942 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 9 states. [2020-11-28 02:56:40,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:40,208 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-11-28 02:56:40,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:56:40,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-28 02:56:40,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:40,210 INFO L225 Difference]: With dead ends: 38 [2020-11-28 02:56:40,210 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 02:56:40,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-11-28 02:56:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 02:56:40,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-11-28 02:56:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 02:56:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-11-28 02:56:40,215 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2020-11-28 02:56:40,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:40,215 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-11-28 02:56:40,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:56:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-11-28 02:56:40,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:56:40,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:40,216 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:40,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 02:56:40,437 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:40,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,438 INFO L82 PathProgramCache]: Analyzing trace with hash 16795890, now seen corresponding path program 1 times [2020-11-28 02:56:40,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:40,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804458426] [2020-11-28 02:56:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,700 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 02:56:40,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804458426] [2020-11-28 02:56:40,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628064566] [2020-11-28 02:56:40,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-28 02:56:40,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:40,911 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:56:40,912 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:40,921 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:40,922 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:56:40,923 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:13 [2020-11-28 02:56:41,249 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 02:56:41,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:41,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-11-28 02:56:41,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991979896] [2020-11-28 02:56:41,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-28 02:56:41,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:41,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-28 02:56:41,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-11-28 02:56:41,251 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 19 states. [2020-11-28 02:56:41,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:41,826 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-11-28 02:56:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 02:56:41,827 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 18 [2020-11-28 02:56:41,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:41,828 INFO L225 Difference]: With dead ends: 40 [2020-11-28 02:56:41,828 INFO L226 Difference]: Without dead ends: 40 [2020-11-28 02:56:41,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2020-11-28 02:56:41,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-28 02:56:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-11-28 02:56:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 02:56:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-28 02:56:41,834 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2020-11-28 02:56:41,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:41,835 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-28 02:56:41,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-28 02:56:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-28 02:56:41,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:56:41,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:41,836 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 02:56:42,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:42,061 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:42,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:42,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1135310430, now seen corresponding path program 1 times [2020-11-28 02:56:42,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:42,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107458191] [2020-11-28 02:56:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-28 02:56:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,206 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 02:56:42,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107458191] [2020-11-28 02:56:42,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:42,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:42,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032920290] [2020-11-28 02:56:42,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:42,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:42,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:42,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:42,212 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2020-11-28 02:56:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:42,329 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-11-28 02:56:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:56:42,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-28 02:56:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:42,330 INFO L225 Difference]: With dead ends: 38 [2020-11-28 02:56:42,330 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 02:56:42,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:42,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 02:56:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 02:56:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 02:56:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-28 02:56:42,334 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-11-28 02:56:42,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:42,334 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-28 02:56:42,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-28 02:56:42,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:42,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:42,334 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:42,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:56:42,335 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:42,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:42,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2066138518, now seen corresponding path program 2 times [2020-11-28 02:56:42,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:42,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893691948] [2020-11-28 02:56:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:42,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893691948] [2020-11-28 02:56:42,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674407351] [2020-11-28 02:56:42,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:42,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:56:42,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:42,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 53 conjunts are in the unsatisfiable core [2020-11-28 02:56:42,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:42,922 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:56:42,922 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:42,941 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:42,942 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:56:42,943 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:13 [2020-11-28 02:56:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:43,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:43,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2020-11-28 02:56:43,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778429563] [2020-11-28 02:56:43,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-28 02:56:43,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:43,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-28 02:56:43,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2020-11-28 02:56:43,498 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 23 states. [2020-11-28 02:56:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:44,439 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-28 02:56:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-28 02:56:44,440 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 22 [2020-11-28 02:56:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:44,440 INFO L225 Difference]: With dead ends: 27 [2020-11-28 02:56:44,441 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:56:44,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2020-11-28 02:56:44,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:56:44,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:56:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:56:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:56:44,442 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-28 02:56:44,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:44,442 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:44,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-28 02:56:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:44,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:56:44,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:44,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:44 BoogieIcfgContainer [2020-11-28 02:56:44,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:44,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:44,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:44,648 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:44,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:36" (3/4) ... [2020-11-28 02:56:44,650 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:56:44,660 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 02:56:44,660 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-11-28 02:56:44,660 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-11-28 02:56:44,660 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-11-28 02:56:44,661 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-11-28 02:56:44,661 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cbzero [2020-11-28 02:56:44,661 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 02:56:44,661 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-11-28 02:56:44,665 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 02:56:44,665 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 02:56:44,665 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:44,666 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:44,719 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1d9b30be-e0c5-4746-acc2-322048475a9b/bin/uautomizer/witness.graphml [2020-11-28 02:56:44,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:44,726 INFO L168 Benchmark]: Toolchain (without parser) took 8894.12 ms. Allocated memory was 94.4 MB in the beginning and 167.8 MB in the end (delta: 73.4 MB). Free memory was 62.9 MB in the beginning and 134.4 MB in the end (delta: -71.5 MB). Peak memory consumption was 297.3 kB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,727 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 53.6 MB in the beginning and 53.6 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:44,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.47 ms. Allocated memory is still 94.4 MB. Free memory was 62.7 MB in the beginning and 60.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,730 INFO L168 Benchmark]: Boogie Preprocessor took 52.01 ms. Allocated memory is still 94.4 MB. Free memory was 60.5 MB in the beginning and 58.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,730 INFO L168 Benchmark]: RCFGBuilder took 615.47 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 58.1 MB in the beginning and 82.5 MB in the end (delta: -24.4 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,731 INFO L168 Benchmark]: TraceAbstraction took 7665.18 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 82.5 MB in the beginning and 137.1 MB in the end (delta: -54.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:44,731 INFO L168 Benchmark]: Witness Printer took 77.99 ms. Allocated memory is still 167.8 MB. Free memory was 137.1 MB in the beginning and 134.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 53.6 MB in the beginning and 53.6 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 477.47 ms. Allocated memory is still 94.4 MB. Free memory was 62.7 MB in the beginning and 60.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.01 ms. Allocated memory is still 94.4 MB. Free memory was 60.5 MB in the beginning and 58.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 615.47 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 58.1 MB in the beginning and 82.5 MB in the end (delta: -24.4 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7665.18 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 82.5 MB in the beginning and 137.1 MB in the end (delta: -54.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 77.99 ms. Allocated memory is still 167.8 MB. Free memory was 137.1 MB in the beginning and 134.4 MB in the end (delta: 2.7 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: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 40 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 150 SDtfs, 253 SDslu, 304 SDs, 0 SdLazy, 994 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 1 QuantifiedInterpolants, 23658 SizeOfPredicates, 26 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 7/34 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...