./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i -s /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/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 0.1.24-cad4683 [2019-10-22 08:55:31,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:31,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:31,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:31,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:31,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:31,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:31,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:31,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:31,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:31,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:31,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:31,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:31,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:31,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:31,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:31,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:31,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:31,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:31,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:31,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:31,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:31,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:31,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:31,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:31,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:31,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:31,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:31,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:31,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:31,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:31,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:31,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:31,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:31,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:31,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:31,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:31,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:31,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:31,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:31,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:31,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:55:31,645 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:31,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:31,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:31,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:31,655 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:31,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:31,656 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:31,656 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:55:31,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:31,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:31,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:31,656 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:55:31,656 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:55:31,657 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:55:31,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:31,657 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:31,657 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:31,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:31,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:31,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:31,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:31,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:31,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:31,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:31,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:31,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:31,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/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 [2019-10-22 08:55:31,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:31,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:31,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:31,698 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:31,698 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:31,699 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i [2019-10-22 08:55:31,746 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/bin/uautomizer/data/980a414c3/86bef9f4b8ed4148b351eecaf0f77ec2/FLAG7f5a9b5e7 [2019-10-22 08:55:32,201 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:32,201 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i [2019-10-22 08:55:32,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/bin/uautomizer/data/980a414c3/86bef9f4b8ed4148b351eecaf0f77ec2/FLAG7f5a9b5e7 [2019-10-22 08:55:32,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/bin/uautomizer/data/980a414c3/86bef9f4b8ed4148b351eecaf0f77ec2 [2019-10-22 08:55:32,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:32,722 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:55:32,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:32,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:32,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:32,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:32" (1/1) ... [2019-10-22 08:55:32,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac1ccf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:32, skipping insertion in model container [2019-10-22 08:55:32,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:32" (1/1) ... [2019-10-22 08:55:32,737 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:32,770 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:33,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:33,202 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:33,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:33,288 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:33,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:33 WrapperNode [2019-10-22 08:55:33,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:33,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:33,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:33,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:33,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:33" (1/1) ... [2019-10-22 08:55:33,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:33" (1/1) ... [2019-10-22 08:55:33,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:33" (1/1) ... [2019-10-22 08:55:33,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:33" (1/1) ... [2019-10-22 08:55:33,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:33" (1/1) ... [2019-10-22 08:55:33,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:33" (1/1) ... [2019-10-22 08:55:33,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:33" (1/1) ... [2019-10-22 08:55:33,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:33,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:33,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:33,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:33,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/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 [2019-10-22 08:55:33,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:55:33,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:33,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:55:33,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:55:33,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 08:55:33,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 08:55:33,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 08:55:33,388 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2019-10-22 08:55:33,388 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrpbrk [2019-10-22 08:55:33,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:55:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:55:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:55:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:55:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:55:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:55:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:55:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:55:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:55:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:55:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:55:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:55:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:55:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:55:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:55:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:55:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:55:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:55:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:55:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 08:55:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 08:55:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 08:55:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:55:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:55:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:55:33,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:55:33,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:55:33,392 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:55:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:55:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:55:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:55:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:55:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:55:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:55:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:55:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:55:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:55:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:55:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:55:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:55:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:55:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:55:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:55:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:55:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:55:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:55:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:55:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:55:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:55:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:55:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:55:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:55:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:55:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:55:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:55:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:55:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:55:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:55:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:55:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:55:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:55:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:55:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:55:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:55:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:55:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:55:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:55:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:55:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:55:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:55:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:55:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:55:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:55:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:55:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:55:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:55:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:55:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:55:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:55:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:55:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:55:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:55:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:55:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure cstrpbrk [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:55:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:33,816 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:33,816 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-22 08:55:33,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:33 BoogieIcfgContainer [2019-10-22 08:55:33,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:33,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:33,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:33,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:33,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:32" (1/3) ... [2019-10-22 08:55:33,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e028d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:33, skipping insertion in model container [2019-10-22 08:55:33,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:33" (2/3) ... [2019-10-22 08:55:33,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e028d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:33, skipping insertion in model container [2019-10-22 08:55:33,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:33" (3/3) ... [2019-10-22 08:55:33,824 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrpbrk_unsafe.i [2019-10-22 08:55:33,833 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:33,840 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2019-10-22 08:55:33,850 INFO L249 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2019-10-22 08:55:33,867 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:33,867 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:55:33,867 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:33,867 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:33,867 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:33,868 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:33,868 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:33,868 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:33,882 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2019-10-22 08:55:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:55:33,891 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:33,892 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:33,893 INFO L410 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:55:33,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:33,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1361999972, now seen corresponding path program 1 times [2019-10-22 08:55:33,905 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:33,906 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416124320] [2019-10-22 08:55:33,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:33,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:33,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:34,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416124320] [2019-10-22 08:55:34,066 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:34,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:55:34,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097065199] [2019-10-22 08:55:34,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:34,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:34,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:34,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:34,084 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2019-10-22 08:55:34,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:34,264 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2019-10-22 08:55:34,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:55:34,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 08:55:34,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:34,274 INFO L225 Difference]: With dead ends: 71 [2019-10-22 08:55:34,274 INFO L226 Difference]: Without dead ends: 68 [2019-10-22 08:55:34,276 INFO L600 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 [2019-10-22 08:55:34,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-22 08:55:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-10-22 08:55:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-10-22 08:55:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2019-10-22 08:55:34,315 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 11 [2019-10-22 08:55:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:34,315 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2019-10-22 08:55:34,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2019-10-22 08:55:34,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:55:34,316 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:34,316 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:34,316 INFO L410 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:55:34,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:34,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1361999971, now seen corresponding path program 1 times [2019-10-22 08:55:34,317 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:34,317 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860904343] [2019-10-22 08:55:34,317 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:34,317 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:34,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:34,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860904343] [2019-10-22 08:55:34,383 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:34,383 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:34,383 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694302481] [2019-10-22 08:55:34,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:34,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:34,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:34,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:34,385 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 5 states. [2019-10-22 08:55:34,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:34,520 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2019-10-22 08:55:34,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:34,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 08:55:34,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:34,522 INFO L225 Difference]: With dead ends: 67 [2019-10-22 08:55:34,522 INFO L226 Difference]: Without dead ends: 67 [2019-10-22 08:55:34,523 INFO L600 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 [2019-10-22 08:55:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-22 08:55:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2019-10-22 08:55:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-10-22 08:55:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2019-10-22 08:55:34,529 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 11 [2019-10-22 08:55:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:34,529 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2019-10-22 08:55:34,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2019-10-22 08:55:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:55:34,530 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:34,530 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:34,531 INFO L410 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:55:34,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:34,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1361999918, now seen corresponding path program 1 times [2019-10-22 08:55:34,531 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:34,532 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181618858] [2019-10-22 08:55:34,532 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:34,532 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:34,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:34,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181618858] [2019-10-22 08:55:34,600 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:34,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:34,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910956440] [2019-10-22 08:55:34,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:34,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:34,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:34,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:34,602 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 5 states. [2019-10-22 08:55:34,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:34,744 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2019-10-22 08:55:34,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:34,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 08:55:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:34,748 INFO L225 Difference]: With dead ends: 73 [2019-10-22 08:55:34,748 INFO L226 Difference]: Without dead ends: 73 [2019-10-22 08:55:34,749 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:55:34,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-10-22 08:55:34,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2019-10-22 08:55:34,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-10-22 08:55:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2019-10-22 08:55:34,770 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 11 [2019-10-22 08:55:34,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:34,771 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2019-10-22 08:55:34,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2019-10-22 08:55:34,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:55:34,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:34,772 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:34,772 INFO L410 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:55:34,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:34,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1361940336, now seen corresponding path program 1 times [2019-10-22 08:55:34,773 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:34,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477065344] [2019-10-22 08:55:34,773 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:34,773 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:34,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:34,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477065344] [2019-10-22 08:55:34,880 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:34,880 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:34,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420012782] [2019-10-22 08:55:34,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:34,881 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:34,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:34,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:34,881 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 5 states. [2019-10-22 08:55:35,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:35,072 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2019-10-22 08:55:35,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:35,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 08:55:35,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:35,073 INFO L225 Difference]: With dead ends: 77 [2019-10-22 08:55:35,073 INFO L226 Difference]: Without dead ends: 77 [2019-10-22 08:55:35,074 INFO L600 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 [2019-10-22 08:55:35,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-10-22 08:55:35,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2019-10-22 08:55:35,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-10-22 08:55:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2019-10-22 08:55:35,085 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 11 [2019-10-22 08:55:35,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:35,086 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2019-10-22 08:55:35,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2019-10-22 08:55:35,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:55:35,086 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:35,087 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:35,087 INFO L410 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:55:35,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:35,087 INFO L82 PathProgramCache]: Analyzing trace with hash 670453331, now seen corresponding path program 1 times [2019-10-22 08:55:35,087 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:35,088 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103655793] [2019-10-22 08:55:35,088 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:35,088 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:35,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:35,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103655793] [2019-10-22 08:55:35,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792529901] [2019-10-22 08:55:35,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/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 [2019-10-22 08:55:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:35,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 08:55:35,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:35,382 INFO L375 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 [2019-10-22 08:55:35,382 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:55:35,392 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:55:35,392 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:55:35,393 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-10-22 08:55:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:35,408 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:55:35,408 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2019-10-22 08:55:35,409 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225319742] [2019-10-22 08:55:35,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:35,409 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:35,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:35,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:35,410 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 7 states. [2019-10-22 08:55:35,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:35,596 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2019-10-22 08:55:35,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:55:35,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-10-22 08:55:35,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:35,598 INFO L225 Difference]: With dead ends: 76 [2019-10-22 08:55:35,598 INFO L226 Difference]: Without dead ends: 76 [2019-10-22 08:55:35,598 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-10-22 08:55:35,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2019-10-22 08:55:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-10-22 08:55:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2019-10-22 08:55:35,605 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 15 [2019-10-22 08:55:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:35,605 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2019-10-22 08:55:35,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2019-10-22 08:55:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 08:55:35,606 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:35,607 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:35,807 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:35,808 INFO L410 AbstractCegarLoop]: === Iteration 6 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:55:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:35,808 INFO L82 PathProgramCache]: Analyzing trace with hash 140003118, now seen corresponding path program 1 times [2019-10-22 08:55:35,808 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:35,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879623050] [2019-10-22 08:55:35,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:35,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:35,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:55:36,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879623050] [2019-10-22 08:55:36,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284563155] [2019-10-22 08:55:36,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/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 [2019-10-22 08:55:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:36,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-22 08:55:36,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:36,248 INFO L375 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 [2019-10-22 08:55:36,249 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:55:36,250 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:55:36,250 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:55:36,250 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-10-22 08:55:36,299 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:55:36,300 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-10-22 08:55:36,300 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:55:36,311 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-10-22 08:55:36,312 INFO L496 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. [2019-10-22 08:55:36,312 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2019-10-22 08:55:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:36,395 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:55:36,395 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 17 [2019-10-22 08:55:36,395 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121602333] [2019-10-22 08:55:36,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-22 08:55:36,396 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:36,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-22 08:55:36,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-22 08:55:36,397 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 18 states. [2019-10-22 08:55:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:36,979 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2019-10-22 08:55:36,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:55:36,981 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 28 [2019-10-22 08:55:36,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:36,982 INFO L225 Difference]: With dead ends: 65 [2019-10-22 08:55:36,982 INFO L226 Difference]: Without dead ends: 65 [2019-10-22 08:55:36,982 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2019-10-22 08:55:36,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-10-22 08:55:36,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2019-10-22 08:55:36,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-10-22 08:55:36,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2019-10-22 08:55:36,992 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 28 [2019-10-22 08:55:36,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:36,993 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2019-10-22 08:55:36,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-22 08:55:36,993 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2019-10-22 08:55:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 08:55:36,994 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:36,994 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:37,194 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:37,194 INFO L410 AbstractCegarLoop]: === Iteration 7 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:55:37,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:37,195 INFO L82 PathProgramCache]: Analyzing trace with hash 140003119, now seen corresponding path program 1 times [2019-10-22 08:55:37,195 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:37,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376408285] [2019-10-22 08:55:37,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:37,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:37,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:55:37,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376408285] [2019-10-22 08:55:37,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592208422] [2019-10-22 08:55:37,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/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 [2019-10-22 08:55:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:37,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-22 08:55:37,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:37,536 INFO L375 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 [2019-10-22 08:55:37,536 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:55:37,544 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:55:37,546 INFO L375 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 [2019-10-22 08:55:37,546 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 08:55:37,551 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:55:37,551 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:55:37,551 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:19, output treesize:14 [2019-10-22 08:55:37,602 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:55:37,602 INFO L375 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 [2019-10-22 08:55:37,603 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:55:37,609 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:55:37,613 INFO L375 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 [2019-10-22 08:55:37,613 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 08:55:37,619 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:55:37,620 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:55:37,620 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:9 [2019-10-22 08:55:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:37,624 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:55:37,624 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 15 [2019-10-22 08:55:37,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900318505] [2019-10-22 08:55:37,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 08:55:37,625 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:37,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 08:55:37,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:55:37,625 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 16 states. [2019-10-22 08:55:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:38,159 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2019-10-22 08:55:38,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:55:38,159 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2019-10-22 08:55:38,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:38,160 INFO L225 Difference]: With dead ends: 86 [2019-10-22 08:55:38,160 INFO L226 Difference]: Without dead ends: 86 [2019-10-22 08:55:38,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2019-10-22 08:55:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-10-22 08:55:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2019-10-22 08:55:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-10-22 08:55:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2019-10-22 08:55:38,170 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 28 [2019-10-22 08:55:38,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:38,171 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2019-10-22 08:55:38,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 08:55:38,171 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2019-10-22 08:55:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 08:55:38,171 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:38,172 INFO L380 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] [2019-10-22 08:55:38,372 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:38,372 INFO L410 AbstractCegarLoop]: === Iteration 8 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:55:38,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:38,373 INFO L82 PathProgramCache]: Analyzing trace with hash 124645684, now seen corresponding path program 1 times [2019-10-22 08:55:38,373 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:38,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657430026] [2019-10-22 08:55:38,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:38,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:38,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 08:55:38,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657430026] [2019-10-22 08:55:38,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:38,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-22 08:55:38,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983154848] [2019-10-22 08:55:38,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 08:55:38,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:38,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 08:55:38,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:38,488 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 11 states. [2019-10-22 08:55:38,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:38,800 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2019-10-22 08:55:38,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:55:38,801 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2019-10-22 08:55:38,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:38,801 INFO L225 Difference]: With dead ends: 67 [2019-10-22 08:55:38,802 INFO L226 Difference]: Without dead ends: 67 [2019-10-22 08:55:38,802 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:55:38,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-22 08:55:38,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2019-10-22 08:55:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-22 08:55:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2019-10-22 08:55:38,808 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 32 [2019-10-22 08:55:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:38,808 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2019-10-22 08:55:38,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 08:55:38,809 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2019-10-22 08:55:38,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 08:55:38,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:38,809 INFO L380 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] [2019-10-22 08:55:38,810 INFO L410 AbstractCegarLoop]: === Iteration 9 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:55:38,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:38,810 INFO L82 PathProgramCache]: Analyzing trace with hash 124645685, now seen corresponding path program 1 times [2019-10-22 08:55:38,811 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:38,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296158175] [2019-10-22 08:55:38,811 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:38,811 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:38,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:55:39,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296158175] [2019-10-22 08:55:39,002 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:39,002 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-22 08:55:39,002 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981273590] [2019-10-22 08:55:39,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 08:55:39,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:39,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 08:55:39,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:55:39,003 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 12 states. [2019-10-22 08:55:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:39,443 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2019-10-22 08:55:39,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 08:55:39,443 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2019-10-22 08:55:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:39,444 INFO L225 Difference]: With dead ends: 125 [2019-10-22 08:55:39,444 INFO L226 Difference]: Without dead ends: 125 [2019-10-22 08:55:39,445 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2019-10-22 08:55:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-10-22 08:55:39,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2019-10-22 08:55:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-10-22 08:55:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2019-10-22 08:55:39,450 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 32 [2019-10-22 08:55:39,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:39,450 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2019-10-22 08:55:39,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 08:55:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2019-10-22 08:55:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 08:55:39,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:39,451 INFO L380 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] [2019-10-22 08:55:39,452 INFO L410 AbstractCegarLoop]: === Iteration 10 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:55:39,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:39,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1155217993, now seen corresponding path program 1 times [2019-10-22 08:55:39,452 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:39,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505783673] [2019-10-22 08:55:39,452 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:39,452 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:39,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:55:39,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505783673] [2019-10-22 08:55:39,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:39,624 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-22 08:55:39,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402474804] [2019-10-22 08:55:39,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 08:55:39,624 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:39,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 08:55:39,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:55:39,625 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand 13 states. [2019-10-22 08:55:40,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:40,005 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2019-10-22 08:55:40,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 08:55:40,005 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2019-10-22 08:55:40,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:40,006 INFO L225 Difference]: With dead ends: 124 [2019-10-22 08:55:40,006 INFO L226 Difference]: Without dead ends: 124 [2019-10-22 08:55:40,007 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2019-10-22 08:55:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-10-22 08:55:40,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 70. [2019-10-22 08:55:40,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-10-22 08:55:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2019-10-22 08:55:40,011 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 32 [2019-10-22 08:55:40,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:40,011 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2019-10-22 08:55:40,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 08:55:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2019-10-22 08:55:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 08:55:40,012 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:40,012 INFO L380 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] [2019-10-22 08:55:40,012 INFO L410 AbstractCegarLoop]: === Iteration 11 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrpbrkErr4REQUIRES_VIOLATION, cstrpbrkErr9REQUIRES_VIOLATION, cstrpbrkErr0REQUIRES_VIOLATION, cstrpbrkErr5REQUIRES_VIOLATION, cstrpbrkErr7REQUIRES_VIOLATION, cstrpbrkErr6REQUIRES_VIOLATION, cstrpbrkErr1REQUIRES_VIOLATION, cstrpbrkErr8REQUIRES_VIOLATION, cstrpbrkErr3REQUIRES_VIOLATION, cstrpbrkErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:55:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:40,013 INFO L82 PathProgramCache]: Analyzing trace with hash -431506202, now seen corresponding path program 1 times [2019-10-22 08:55:40,013 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:40,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415867474] [2019-10-22 08:55:40,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:40,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:40,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:40,078 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:40,080 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:55:40,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:40 BoogieIcfgContainer [2019-10-22 08:55:40,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:40,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:40,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:40,106 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:40,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:33" (3/4) ... [2019-10-22 08:55:40,109 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:55:40,155 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_413162db-2a4f-46c2-b4a2-66a09bc60c76/bin/uautomizer/witness.graphml [2019-10-22 08:55:40,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:40,156 INFO L168 Benchmark]: Toolchain (without parser) took 7434.24 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 326.6 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -159.2 MB). Peak memory consumption was 167.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:40,157 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:40,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -182.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:40,157 INFO L168 Benchmark]: Boogie Preprocessor took 45.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:40,158 INFO L168 Benchmark]: RCFGBuilder took 481.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:40,158 INFO L168 Benchmark]: TraceAbstraction took 6287.72 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 175.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -44.2 MB). Peak memory consumption was 131.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:40,158 INFO L168 Benchmark]: Witness Printer took 49.16 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:40,160 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 566.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -182.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 481.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6287.72 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 175.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -44.2 MB). Peak memory consumption was 131.5 MB. Max. memory is 11.5 GB. * Witness Printer took 49.16 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 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))={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}] [L547] RET, EXPR build_nondet_String() VAL [build_nondet_String()={1:0}, s1={-1:0}] [L547] char* s2 = build_nondet_String(); [L548] CALL cstrpbrk(s1,s2) VAL [s1={-1:0}, s2={1:0}] [L532] const char *sc1; [L533] const char *s; [L534] int c; [L535] sc1 = s1 VAL [s1={-1:0}, s1={-1:0}, s2={1:0}, s2={1:0}, sc1={-1:0}] [L535] EXPR \read(*sc1) VAL [\read(*sc1)=0, s1={-1:0}, s1={-1:0}, s2={1:0}, s2={1:0}, sc1={-1:0}] [L535] COND FALSE !(*sc1 != '\0') [L543] return 0; VAL [\result={0:0}, s1={-1:0}, s1={-1:0}, s2={1:0}, s2={1:0}, sc1={-1:0}] [L548] RET cstrpbrk(s1,s2) VAL [cstrpbrk(s1,s2)={0:0}, s1={-1:0}, s2={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 88 locations, 23 error locations. Result: UNSAFE, OverallTime: 6.2s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 486 SDtfs, 1225 SDslu, 958 SDs, 0 SdLazy, 2804 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 116 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 315 NumberOfCodeBlocks, 315 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 269 ConstructedInterpolants, 14 QuantifiedInterpolants, 41996 SizeOfPredicates, 19 NumberOfNonLiveVariables, 356 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 39/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...