./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.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_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/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 5a3019657b4c9b0e8c0aa3e888313d420fe28d28 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:28:27,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:28:27,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:28:27,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:28:27,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:28:27,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:28:27,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:28:27,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:28:27,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:28:27,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:28:27,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:28:27,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:28:27,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:28:27,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:28:27,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:28:27,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:28:27,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:28:27,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:28:27,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:28:27,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:28:27,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:28:27,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:28:27,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:28:27,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:28:27,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:28:27,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:28:27,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:28:27,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:28:27,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:28:27,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:28:27,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:28:27,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:28:27,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:28:27,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:28:27,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:28:27,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:28:27,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:28:27,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:28:27,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:28:27,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:28:27,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:28:27,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 22:28:27,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:28:27,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:28:27,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:28:27,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:28:27,771 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:28:27,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:28:27,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:28:27,772 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:28:27,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:28:27,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:28:27,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:28:27,773 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 22:28:27,773 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 22:28:27,774 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 22:28:27,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:28:27,774 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 22:28:27,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:28:27,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:28:27,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:28:27,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:28:27,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:28:27,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:28:27,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:28:27,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:28:27,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:28:27,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:28:27,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:28:27,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:28:27,777 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_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a3019657b4c9b0e8c0aa3e888313d420fe28d28 [2020-11-29 22:28:28,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:28:28,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:28:28,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:28:28,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:28:28,058 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:28:28,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i [2020-11-29 22:28:28,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer/data/c9900973d/27a612fb2dd54a148fa78bc677f5d289/FLAG5fd1b2d1d [2020-11-29 22:28:28,690 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:28:28,695 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i [2020-11-29 22:28:28,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer/data/c9900973d/27a612fb2dd54a148fa78bc677f5d289/FLAG5fd1b2d1d [2020-11-29 22:28:28,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer/data/c9900973d/27a612fb2dd54a148fa78bc677f5d289 [2020-11-29 22:28:28,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:28:28,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 22:28:28,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:28:28,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:28:28,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:28:28,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:28:28" (1/1) ... [2020-11-29 22:28:28,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee8ffd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:28, skipping insertion in model container [2020-11-29 22:28:28,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:28:28" (1/1) ... [2020-11-29 22:28:28,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:28:29,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:28:29,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:28:29,367 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:28:29,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:28:29,477 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:28:29,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:29 WrapperNode [2020-11-29 22:28:29,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:28:29,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:28:29,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:28:29,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:28:29,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:29" (1/1) ... [2020-11-29 22:28:29,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:29" (1/1) ... [2020-11-29 22:28:29,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:29" (1/1) ... [2020-11-29 22:28:29,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:29" (1/1) ... [2020-11-29 22:28:29,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:29" (1/1) ... [2020-11-29 22:28:29,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:29" (1/1) ... [2020-11-29 22:28:29,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:29" (1/1) ... [2020-11-29 22:28:29,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:28:29,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:28:29,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:28:29,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:28:29,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/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 [2020-11-29 22:28:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 22:28:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:28:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-29 22:28:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-29 22:28:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-29 22:28:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-29 22:28:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-29 22:28:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2020-11-29 22:28:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrpbrk [2020-11-29 22:28:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 22:28:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 22:28:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 22:28:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 22:28:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 22:28:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 22:28:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 22:28:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 22:28:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 22:28:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 22:28:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 22:28:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 22:28:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 22:28:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 22:28:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 22:28:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 22:28:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 22:28:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-29 22:28:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-29 22:28:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-29 22:28:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-29 22:28:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-29 22:28:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 22:28:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 22:28:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 22:28:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 22:28:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 22:28:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 22:28:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 22:28:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 22:28:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 22:28:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 22:28:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 22:28:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 22:28:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 22:28:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 22:28:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 22:28:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 22:28:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 22:28:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 22:28:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 22:28:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 22:28:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 22:28:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 22:28:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 22:28:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 22:28:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 22:28:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 22:28:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 22:28:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 22:28:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 22:28:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 22:28:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 22:28:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 22:28:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 22:28:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 22:28:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 22:28:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 22:28:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 22:28:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 22:28:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 22:28:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 22:28:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 22:28:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 22:28:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 22:28:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 22:28:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 22:28:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 22:28:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 22:28:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 22:28:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 22:28:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 22:28:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 22:28:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 22:28:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 22:28:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 22:28:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 22:28:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 22:28:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 22:28:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 22:28:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 22:28:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 22:28:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 22:28:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 22:28:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 22:28:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 22:28:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 22:28:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 22:28:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 22:28:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 22:28:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 22:28:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 22:28:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 22:28:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 22:28:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 22:28:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 22:28:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 22:28:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 22:28:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 22:28:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 22:28:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 22:28:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 22:28:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 22:28:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 22:28:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 22:28:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 22:28:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 22:28:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 22:28:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 22:28:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-29 22:28:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2020-11-29 22:28:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 22:28:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:28:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure cstrpbrk [2020-11-29 22:28:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:28:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 22:28:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:28:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 22:28:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:28:30,338 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:28:30,338 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-29 22:28:30,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:28:30 BoogieIcfgContainer [2020-11-29 22:28:30,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:28:30,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:28:30,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:28:30,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:28:30,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:28:28" (1/3) ... [2020-11-29 22:28:30,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a80d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:28:30, skipping insertion in model container [2020-11-29 22:28:30,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:29" (2/3) ... [2020-11-29 22:28:30,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a80d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:28:30, skipping insertion in model container [2020-11-29 22:28:30,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:28:30" (3/3) ... [2020-11-29 22:28:30,358 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrpbrk_unsafe.i [2020-11-29 22:28:30,372 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:28:30,376 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-11-29 22:28:30,388 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-11-29 22:28:30,423 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:28:30,423 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 22:28:30,423 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:28:30,423 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:28:30,423 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:28:30,424 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:28:30,424 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:28:30,424 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:28:30,447 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-11-29 22:28:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:28:30,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:30,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:30,462 INFO L429 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:30,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:30,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1361999972, now seen corresponding path program 1 times [2020-11-29 22:28:30,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:30,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008731977] [2020-11-29 22:28:30,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:30,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:28:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:30,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008731977] [2020-11-29 22:28:30,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:30,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:28:30,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24349744] [2020-11-29 22:28:30,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:28:30,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:30,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:28:30,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:28:30,747 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-11-29 22:28:31,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:31,052 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-11-29 22:28:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:28:31,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 22:28:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:31,063 INFO L225 Difference]: With dead ends: 71 [2020-11-29 22:28:31,063 INFO L226 Difference]: Without dead ends: 68 [2020-11-29 22:28:31,065 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 [2020-11-29 22:28:31,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-29 22:28:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-29 22:28:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 22:28:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-11-29 22:28:31,102 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 11 [2020-11-29 22:28:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:31,103 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-11-29 22:28:31,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:28:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-11-29 22:28:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:28:31,104 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:31,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:31,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:28:31,104 INFO L429 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:31,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:31,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1361999971, now seen corresponding path program 1 times [2020-11-29 22:28:31,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:31,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098635354] [2020-11-29 22:28:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:28:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:31,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098635354] [2020-11-29 22:28:31,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:31,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:28:31,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440529089] [2020-11-29 22:28:31,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:28:31,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:31,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:28:31,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:28:31,210 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 5 states. [2020-11-29 22:28:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:31,443 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-11-29 22:28:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:28:31,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 22:28:31,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:31,445 INFO L225 Difference]: With dead ends: 67 [2020-11-29 22:28:31,445 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 22:28:31,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:28:31,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 22:28:31,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-11-29 22:28:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-29 22:28:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-11-29 22:28:31,454 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 11 [2020-11-29 22:28:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:31,455 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-11-29 22:28:31,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:28:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-11-29 22:28:31,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:28:31,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:31,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:31,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:28:31,457 INFO L429 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:31,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1361999918, now seen corresponding path program 1 times [2020-11-29 22:28:31,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:31,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879684888] [2020-11-29 22:28:31,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:28:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:31,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879684888] [2020-11-29 22:28:31,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:31,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:28:31,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507001790] [2020-11-29 22:28:31,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:28:31,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:31,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:28:31,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:28:31,536 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 5 states. [2020-11-29 22:28:31,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:31,710 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2020-11-29 22:28:31,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:28:31,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 22:28:31,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:31,713 INFO L225 Difference]: With dead ends: 73 [2020-11-29 22:28:31,713 INFO L226 Difference]: Without dead ends: 73 [2020-11-29 22:28:31,714 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 [2020-11-29 22:28:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-29 22:28:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-11-29 22:28:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-29 22:28:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-11-29 22:28:31,727 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 11 [2020-11-29 22:28:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:31,728 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-11-29 22:28:31,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:28:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-11-29 22:28:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:28:31,733 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:31,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:31,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:28:31,733 INFO L429 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:31,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1361940336, now seen corresponding path program 1 times [2020-11-29 22:28:31,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:31,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942991442] [2020-11-29 22:28:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:28:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:31,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942991442] [2020-11-29 22:28:31,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:31,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:28:31,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409962365] [2020-11-29 22:28:31,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:28:31,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:31,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:28:31,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:28:31,867 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 5 states. [2020-11-29 22:28:32,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:32,124 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-11-29 22:28:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:28:32,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 22:28:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:32,126 INFO L225 Difference]: With dead ends: 77 [2020-11-29 22:28:32,126 INFO L226 Difference]: Without dead ends: 77 [2020-11-29 22:28:32,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:28:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-29 22:28:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-11-29 22:28:32,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-29 22:28:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2020-11-29 22:28:32,134 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 11 [2020-11-29 22:28:32,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:32,134 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2020-11-29 22:28:32,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:28:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2020-11-29 22:28:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 22:28:32,135 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:32,135 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:32,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:28:32,135 INFO L429 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:32,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:32,136 INFO L82 PathProgramCache]: Analyzing trace with hash 670453331, now seen corresponding path program 1 times [2020-11-29 22:28:32,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:32,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921904788] [2020-11-29 22:28:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:32,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:28:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:32,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921904788] [2020-11-29 22:28:32,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038610779] [2020-11-29 22:28:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/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 [2020-11-29 22:28:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:32,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:28:32,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:28:32,512 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 [2020-11-29 22:28:32,512 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:28:32,520 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:28:32,520 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:28:32,521 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-29 22:28:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:32,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:28:32,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-11-29 22:28:32,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844853169] [2020-11-29 22:28:32,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:28:32,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:32,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:28:32,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:28:32,580 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 7 states. [2020-11-29 22:28:33,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:33,036 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2020-11-29 22:28:33,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:28:33,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-29 22:28:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:33,038 INFO L225 Difference]: With dead ends: 76 [2020-11-29 22:28:33,038 INFO L226 Difference]: Without dead ends: 76 [2020-11-29 22:28:33,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:28:33,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-29 22:28:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-11-29 22:28:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 22:28:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-11-29 22:28:33,053 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 15 [2020-11-29 22:28:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:33,053 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-11-29 22:28:33,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:28:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-11-29 22:28:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 22:28:33,055 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:33,055 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:33,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:28:33,275 INFO L429 AbstractCegarLoop]: === Iteration 6 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:33,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:33,276 INFO L82 PathProgramCache]: Analyzing trace with hash 140003118, now seen corresponding path program 1 times [2020-11-29 22:28:33,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:33,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152981620] [2020-11-29 22:28:33,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:33,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:28:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:28:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:33,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-29 22:28:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:28:33,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152981620] [2020-11-29 22:28:33,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098032189] [2020-11-29 22:28:33,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/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 [2020-11-29 22:28:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:33,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 22:28:33,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:28:33,831 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 [2020-11-29 22:28:33,831 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:28:33,833 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:28:33,833 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:28:33,834 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 22:28:33,972 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:28:33,973 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-29 22:28:33,974 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:28:34,001 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-11-29 22:28:34,002 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:28:34,002 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-11-29 22:28:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:34,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:28:34,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 13 [2020-11-29 22:28:34,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788242643] [2020-11-29 22:28:34,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 22:28:34,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:34,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 22:28:34,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-11-29 22:28:34,021 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 14 states. [2020-11-29 22:28:34,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:34,831 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-11-29 22:28:34,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:28:34,831 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-11-29 22:28:34,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:34,832 INFO L225 Difference]: With dead ends: 69 [2020-11-29 22:28:34,832 INFO L226 Difference]: Without dead ends: 69 [2020-11-29 22:28:34,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2020-11-29 22:28:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-29 22:28:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-11-29 22:28:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 22:28:34,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-11-29 22:28:34,845 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 28 [2020-11-29 22:28:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:34,846 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-11-29 22:28:34,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 22:28:34,846 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-11-29 22:28:34,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 22:28:34,848 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:34,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:35,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:28:35,084 INFO L429 AbstractCegarLoop]: === Iteration 7 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash 140003119, now seen corresponding path program 1 times [2020-11-29 22:28:35,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:35,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349666943] [2020-11-29 22:28:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:28:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:35,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:28:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:35,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-29 22:28:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:28:35,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349666943] [2020-11-29 22:28:35,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853412737] [2020-11-29 22:28:35,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/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 [2020-11-29 22:28:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:35,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-29 22:28:35,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:28:35,682 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 [2020-11-29 22:28:35,683 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:28:35,688 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:28:35,688 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:28:35,688 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 22:28:35,907 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:28:35,907 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-29 22:28:35,908 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:28:35,927 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-11-29 22:28:35,928 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:28:35,929 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-11-29 22:28:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:36,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:28:36,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2020-11-29 22:28:36,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381905029] [2020-11-29 22:28:36,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 22:28:36,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:36,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 22:28:36,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-11-29 22:28:36,002 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 24 states. [2020-11-29 22:28:37,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:37,457 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-11-29 22:28:37,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 22:28:37,459 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2020-11-29 22:28:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:37,460 INFO L225 Difference]: With dead ends: 140 [2020-11-29 22:28:37,460 INFO L226 Difference]: Without dead ends: 140 [2020-11-29 22:28:37,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2020-11-29 22:28:37,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-29 22:28:37,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 96. [2020-11-29 22:28:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 22:28:37,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 120 transitions. [2020-11-29 22:28:37,476 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 120 transitions. Word has length 28 [2020-11-29 22:28:37,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:37,477 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 120 transitions. [2020-11-29 22:28:37,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 22:28:37,477 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 120 transitions. [2020-11-29 22:28:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 22:28:37,478 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:37,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:37,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:28:37,699 INFO L429 AbstractCegarLoop]: === Iteration 8 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:37,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:37,700 INFO L82 PathProgramCache]: Analyzing trace with hash 562704945, now seen corresponding path program 1 times [2020-11-29 22:28:37,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:37,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891376540] [2020-11-29 22:28:37,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:37,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:28:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:37,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:28:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-29 22:28:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:28:38,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891376540] [2020-11-29 22:28:38,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093857939] [2020-11-29 22:28:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/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 [2020-11-29 22:28:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:38,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-29 22:28:38,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:28:38,204 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 [2020-11-29 22:28:38,205 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:28:38,217 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:28:38,221 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 [2020-11-29 22:28:38,222 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:28:38,231 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:28:38,232 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:28:38,232 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:19, output treesize:14 [2020-11-29 22:28:38,360 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:28:38,361 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-11-29 22:28:38,363 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:28:38,367 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:28:38,381 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:28:38,386 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-11-29 22:28:38,387 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:28:38,397 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:28:38,399 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:28:38,399 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:9 [2020-11-29 22:28:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:38,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:28:38,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 15 [2020-11-29 22:28:38,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139336273] [2020-11-29 22:28:38,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 22:28:38,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:38,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 22:28:38,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:28:38,405 INFO L87 Difference]: Start difference. First operand 96 states and 120 transitions. Second operand 16 states. [2020-11-29 22:28:39,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:39,377 INFO L93 Difference]: Finished difference Result 130 states and 167 transitions. [2020-11-29 22:28:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 22:28:39,379 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2020-11-29 22:28:39,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:39,381 INFO L225 Difference]: With dead ends: 130 [2020-11-29 22:28:39,381 INFO L226 Difference]: Without dead ends: 130 [2020-11-29 22:28:39,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2020-11-29 22:28:39,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-29 22:28:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 67. [2020-11-29 22:28:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-29 22:28:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-11-29 22:28:39,388 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 28 [2020-11-29 22:28:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:39,389 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-11-29 22:28:39,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 22:28:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-11-29 22:28:39,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:28:39,390 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:39,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:39,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:28:39,603 INFO L429 AbstractCegarLoop]: === Iteration 9 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:39,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:39,603 INFO L82 PathProgramCache]: Analyzing trace with hash 124645684, now seen corresponding path program 1 times [2020-11-29 22:28:39,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:39,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021927445] [2020-11-29 22:28:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:39,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:28:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:39,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:28:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-29 22:28:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 22:28:39,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021927445] [2020-11-29 22:28:39,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:39,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-29 22:28:39,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067198998] [2020-11-29 22:28:39,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:28:39,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:39,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:28:39,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:28:39,778 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 11 states. [2020-11-29 22:28:40,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:40,199 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-11-29 22:28:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:28:40,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-11-29 22:28:40,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:40,201 INFO L225 Difference]: With dead ends: 67 [2020-11-29 22:28:40,201 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 22:28:40,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:28:40,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 22:28:40,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2020-11-29 22:28:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-29 22:28:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2020-11-29 22:28:40,206 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 32 [2020-11-29 22:28:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:40,206 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2020-11-29 22:28:40,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:28:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2020-11-29 22:28:40,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:28:40,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:40,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:40,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 22:28:40,208 INFO L429 AbstractCegarLoop]: === Iteration 10 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:40,208 INFO L82 PathProgramCache]: Analyzing trace with hash 124645685, now seen corresponding path program 1 times [2020-11-29 22:28:40,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:40,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24966411] [2020-11-29 22:28:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:40,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:28:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:28:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:40,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-29 22:28:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 22:28:40,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24966411] [2020-11-29 22:28:40,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:40,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-29 22:28:40,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509876304] [2020-11-29 22:28:40,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 22:28:40,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:40,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 22:28:40,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:28:40,432 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 12 states. [2020-11-29 22:28:41,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:41,085 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2020-11-29 22:28:41,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:28:41,086 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-11-29 22:28:41,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:41,087 INFO L225 Difference]: With dead ends: 125 [2020-11-29 22:28:41,087 INFO L226 Difference]: Without dead ends: 125 [2020-11-29 22:28:41,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-11-29 22:28:41,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-29 22:28:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2020-11-29 22:28:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-29 22:28:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2020-11-29 22:28:41,098 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 32 [2020-11-29 22:28:41,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:41,098 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2020-11-29 22:28:41,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 22:28:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2020-11-29 22:28:41,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:28:41,100 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:41,100 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:41,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 22:28:41,100 INFO L429 AbstractCegarLoop]: === Iteration 11 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:41,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:41,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1155217993, now seen corresponding path program 1 times [2020-11-29 22:28:41,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:41,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753284950] [2020-11-29 22:28:41,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:41,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:28:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:41,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 22:28:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:41,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-29 22:28:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 22:28:41,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753284950] [2020-11-29 22:28:41,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:41,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-29 22:28:41,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178767981] [2020-11-29 22:28:41,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 22:28:41,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:41,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 22:28:41,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:28:41,328 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand 12 states. [2020-11-29 22:28:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:41,807 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2020-11-29 22:28:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:28:41,807 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-11-29 22:28:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:41,809 INFO L225 Difference]: With dead ends: 124 [2020-11-29 22:28:41,809 INFO L226 Difference]: Without dead ends: 124 [2020-11-29 22:28:41,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-11-29 22:28:41,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-29 22:28:41,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 70. [2020-11-29 22:28:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 22:28:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2020-11-29 22:28:41,813 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 32 [2020-11-29 22:28:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:41,814 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2020-11-29 22:28:41,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 22:28:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2020-11-29 22:28:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 22:28:41,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:41,815 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:41,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 22:28:41,815 INFO L429 AbstractCegarLoop]: === Iteration 12 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:28:41,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:41,816 INFO L82 PathProgramCache]: Analyzing trace with hash -431506202, now seen corresponding path program 1 times [2020-11-29 22:28:41,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:41,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99056142] [2020-11-29 22:28:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:28:41,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:28:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:28:41,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:28:41,868 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:28:41,870 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:28:41,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 22:28:41,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:28:41 BoogieIcfgContainer [2020-11-29 22:28:41,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:28:41,920 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:28:41,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:28:41,921 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:28:41,921 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:28:30" (3/4) ... [2020-11-29 22:28:41,923 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 22:28:41,994 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d7bb6c5e-3505-4375-b4a3-3ad3a426d89b/bin/uautomizer/witness.graphml [2020-11-29 22:28:41,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:28:41,995 INFO L168 Benchmark]: Toolchain (without parser) took 13046.47 ms. Allocated memory was 98.6 MB in the beginning and 188.7 MB in the end (delta: 90.2 MB). Free memory was 70.0 MB in the beginning and 109.9 MB in the end (delta: -39.9 MB). Peak memory consumption was 48.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:41,996 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory was 56.1 MB in the beginning and 56.1 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:28:41,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.41 ms. Allocated memory is still 98.6 MB. Free memory was 69.7 MB in the beginning and 65.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:41,996 INFO L168 Benchmark]: Boogie Preprocessor took 95.29 ms. Allocated memory is still 98.6 MB. Free memory was 65.1 MB in the beginning and 62.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:41,997 INFO L168 Benchmark]: RCFGBuilder took 770.98 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 62.7 MB in the beginning and 70.2 MB in the end (delta: -7.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:41,997 INFO L168 Benchmark]: TraceAbstraction took 11570.03 ms. Allocated memory was 119.5 MB in the beginning and 188.7 MB in the end (delta: 69.2 MB). Free memory was 69.6 MB in the beginning and 113.0 MB in the end (delta: -43.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:41,998 INFO L168 Benchmark]: Witness Printer took 74.12 ms. Allocated memory is still 188.7 MB. Free memory was 113.0 MB in the beginning and 109.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:42,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory was 56.1 MB in the beginning and 56.1 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 526.41 ms. Allocated memory is still 98.6 MB. Free memory was 69.7 MB in the beginning and 65.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.29 ms. Allocated memory is still 98.6 MB. Free memory was 65.1 MB in the beginning and 62.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 770.98 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 62.7 MB in the beginning and 70.2 MB in the end (delta: -7.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11570.03 ms. Allocated memory was 119.5 MB in the beginning and 188.7 MB in the end (delta: 69.2 MB). Free memory was 69.6 MB in the beginning and 113.0 MB in the end (delta: -43.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * Witness Printer took 74.12 ms. Allocated memory is still 188.7 MB. Free memory was 113.0 MB in the beginning and 109.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 548]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L546] CALL, EXPR build_nondet_String() [L515] int length = __VERIFIER_nondet_int(); [L516] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L521] COND FALSE !(i < length - 1) VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L527] nondetString[length-1] = '\0' VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L528] return nondetString; VAL [\result={-1:0}, i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L546] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-1:0}] [L546] char* s1 = build_nondet_String(); [L547] CALL, EXPR build_nondet_String() [L515] int length = __VERIFIER_nondet_int(); [L516] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; VAL [i=0, length=1, malloc(length * sizeof(char))={-2:0}, nondetString={-2:0}] [L521] COND FALSE !(i < length - 1) VAL [i=0, length=1, malloc(length * sizeof(char))={-2:0}, nondetString={-2:0}] [L527] nondetString[length-1] = '\0' VAL [i=0, length=1, malloc(length * sizeof(char))={-2:0}, nondetString={-2:0}] [L528] return nondetString; VAL [\result={-2:0}, i=0, length=1, malloc(length * sizeof(char))={-2:0}, nondetString={-2:0}] [L547] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-2:0}, s1={-1:0}] [L547] char* s2 = build_nondet_String(); [L548] CALL cstrpbrk(s1,s2) VAL [s1={-1:0}, s2={-2:0}] [L532] const char *sc1; [L533] const char *s; [L534] int c; [L535] sc1 = s1 VAL [s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}, sc1={-1:0}] [L535] EXPR \read(*sc1) VAL [\read(*sc1)=0, s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}, sc1={-1:0}] [L535] COND FALSE !(*sc1 != '\0') [L543] return 0; VAL [\result={0:0}, s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}, sc1={-1:0}] [L548] RET cstrpbrk(s1,s2) VAL [cstrpbrk(s1,s2)={0:0}, s1={-1:0}, s2={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 88 locations, 23 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.4s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 530 SDtfs, 1635 SDslu, 1192 SDs, 0 SdLazy, 3686 SolverSat, 154 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 275 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 208 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 371 NumberOfCodeBlocks, 371 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 323 ConstructedInterpolants, 15 QuantifiedInterpolants, 52063 SizeOfPredicates, 30 NumberOfNonLiveVariables, 502 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 42/76 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 incorrect! Received shutdown request...