./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/array01-alloca-2.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_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/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 0e0283c2b515067609d1d09b2bc4afe3d1f1d910 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:00:00,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:00,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:00,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:00,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:00,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:00,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:00,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:00,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:00,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:00,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:00,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:00,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:00,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:00,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:00,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:00,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:00,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:00,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:00,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:00,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:00,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:00,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:00,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:00,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:00,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:00,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:00,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:00,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:00,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:00,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:00,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:00,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:00,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:00,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:00,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:00,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:00,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:00,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:00,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:00,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:00,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 09:00:00,837 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:00,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:00,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:00,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:00,838 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:00,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:00,839 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:00:00,839 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:00:00,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:00,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:00:00,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:00,851 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 09:00:00,851 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 09:00:00,851 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 09:00:00,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:00:00,851 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:00:00,852 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:00,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:00,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:00,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:00:00,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:00:00,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:00:00,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:00,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:00:00,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:00,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:00:00,853 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_9a6258e3-a7ee-420a-8db7-662975c290b6/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 -> 0e0283c2b515067609d1d09b2bc4afe3d1f1d910 [2019-10-22 09:00:00,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:00,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:00,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:00,908 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:00,909 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:00,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2019-10-22 09:00:00,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/data/8c88adad1/685890fe89b948738692f592cefd4c4a/FLAG97d214d3a [2019-10-22 09:00:01,392 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:01,393 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2019-10-22 09:00:01,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/data/8c88adad1/685890fe89b948738692f592cefd4c4a/FLAG97d214d3a [2019-10-22 09:00:01,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/data/8c88adad1/685890fe89b948738692f592cefd4c4a [2019-10-22 09:00:01,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:01,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 09:00:01,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:01,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:01,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:01,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:01" (1/1) ... [2019-10-22 09:00:01,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b053f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:01, skipping insertion in model container [2019-10-22 09:00:01,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:01" (1/1) ... [2019-10-22 09:00:01,437 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:01,474 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:01,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:01,882 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:01,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:01,973 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:01,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:01 WrapperNode [2019-10-22 09:00:01,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:01,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:01,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:01,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:01,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:01" (1/1) ... [2019-10-22 09:00:01,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:01" (1/1) ... [2019-10-22 09:00:01,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:01" (1/1) ... [2019-10-22 09:00:01,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:01" (1/1) ... [2019-10-22 09:00:02,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:01" (1/1) ... [2019-10-22 09:00:02,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:01" (1/1) ... [2019-10-22 09:00:02,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:01" (1/1) ... [2019-10-22 09:00:02,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:02,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:02,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:02,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:02,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/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 09:00:02,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 09:00:02,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:02,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 09:00:02,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 09:00:02,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 09:00:02,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 09:00:02,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 09:00:02,065 INFO L138 BoogieDeclarations]: Found implementation of procedure test_fun [2019-10-22 09:00:02,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 09:00:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 09:00:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 09:00:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 09:00:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 09:00:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 09:00:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 09:00:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 09:00:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 09:00:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 09:00:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 09:00:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 09:00:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 09:00:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 09:00:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 09:00:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 09:00:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 09:00:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 09:00:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 09:00:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 09:00:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 09:00:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 09:00:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 09:00:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 09:00:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 09:00:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 09:00:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 09:00:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 09:00:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 09:00:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 09:00:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 09:00:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 09:00:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 09:00:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 09:00:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 09:00:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 09:00:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 09:00:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 09:00:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 09:00:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 09:00:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 09:00:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 09:00:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 09:00:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 09:00:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 09:00:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 09:00:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 09:00:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 09:00:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 09:00:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 09:00:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 09:00:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 09:00:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 09:00:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 09:00:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 09:00:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 09:00:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 09:00:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 09:00:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 09:00:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 09:00:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 09:00:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 09:00:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 09:00:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 09:00:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 09:00:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 09:00:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 09:00:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 09:00:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 09:00:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 09:00:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 09:00:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 09:00:02,077 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 09:00:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 09:00:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 09:00:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 09:00:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 09:00:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 09:00:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 09:00:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 09:00:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 09:00:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 09:00:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 09:00:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 09:00:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 09:00:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 09:00:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 09:00:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 09:00:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 09:00:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 09:00:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 09:00:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 09:00:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 09:00:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 09:00:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 09:00:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 09:00:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 09:00:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 09:00:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 09:00:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 09:00:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 09:00:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 09:00:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 09:00:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 09:00:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 09:00:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 09:00:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 09:00:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 09:00:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 09:00:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure test_fun [2019-10-22 09:00:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 09:00:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:00:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 09:00:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:00:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:00:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 09:00:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:02,444 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:02,445 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-22 09:00:02,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:02 BoogieIcfgContainer [2019-10-22 09:00:02,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:02,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:00:02,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:00:02,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:00:02,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:00:01" (1/3) ... [2019-10-22 09:00:02,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6630a2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:02, skipping insertion in model container [2019-10-22 09:00:02,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:01" (2/3) ... [2019-10-22 09:00:02,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6630a2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:02, skipping insertion in model container [2019-10-22 09:00:02,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:02" (3/3) ... [2019-10-22 09:00:02,456 INFO L109 eAbstractionObserver]: Analyzing ICFG array01-alloca-2.i [2019-10-22 09:00:02,465 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:00:02,473 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-10-22 09:00:02,484 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-10-22 09:00:02,505 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:00:02,506 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 09:00:02,506 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:00:02,506 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:02,506 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:02,507 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:00:02,507 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:02,507 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:00:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-10-22 09:00:02,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:00:02,537 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:02,538 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:02,540 INFO L410 AbstractCegarLoop]: === Iteration 1 === [test_funErr1REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 09:00:02,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:02,548 INFO L82 PathProgramCache]: Analyzing trace with hash 828968537, now seen corresponding path program 1 times [2019-10-22 09:00:02,556 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:02,557 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623929285] [2019-10-22 09:00:02,557 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:02,557 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:02,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:02,731 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 09:00:02,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623929285] [2019-10-22 09:00:02,732 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:02,733 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:00:02,733 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099109491] [2019-10-22 09:00:02,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:00:02,737 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:02,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:00:02,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:02,749 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2019-10-22 09:00:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:02,850 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-10-22 09:00:02,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:00:02,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 09:00:02,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:02,860 INFO L225 Difference]: With dead ends: 38 [2019-10-22 09:00:02,860 INFO L226 Difference]: Without dead ends: 35 [2019-10-22 09:00:02,862 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 09:00:02,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-22 09:00:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-22 09:00:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 09:00:02,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2019-10-22 09:00:02,894 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 10 [2019-10-22 09:00:02,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:02,895 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2019-10-22 09:00:02,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:00:02,895 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2019-10-22 09:00:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:00:02,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:02,896 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:02,896 INFO L410 AbstractCegarLoop]: === Iteration 2 === [test_funErr1REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 09:00:02,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:02,897 INFO L82 PathProgramCache]: Analyzing trace with hash 828968538, now seen corresponding path program 1 times [2019-10-22 09:00:02,897 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:02,897 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467671812] [2019-10-22 09:00:02,897 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:02,897 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:02,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:02,995 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 09:00:02,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467671812] [2019-10-22 09:00:02,997 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:02,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:02,997 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399489173] [2019-10-22 09:00:02,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:02,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:02,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:02,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:02,999 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 6 states. [2019-10-22 09:00:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:03,179 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-10-22 09:00:03,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:03,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-22 09:00:03,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:03,182 INFO L225 Difference]: With dead ends: 39 [2019-10-22 09:00:03,182 INFO L226 Difference]: Without dead ends: 39 [2019-10-22 09:00:03,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-22 09:00:03,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-10-22 09:00:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 09:00:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2019-10-22 09:00:03,190 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 10 [2019-10-22 09:00:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:03,190 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2019-10-22 09:00:03,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:03,191 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2019-10-22 09:00:03,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 09:00:03,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:03,191 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:03,191 INFO L410 AbstractCegarLoop]: === Iteration 3 === [test_funErr1REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 09:00:03,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:03,192 INFO L82 PathProgramCache]: Analyzing trace with hash 521590813, now seen corresponding path program 1 times [2019-10-22 09:00:03,192 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:03,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230976138] [2019-10-22 09:00:03,192 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:03,192 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:03,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:03,281 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 09:00:03,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230976138] [2019-10-22 09:00:03,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074271564] [2019-10-22 09:00:03,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/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 09:00:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:03,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:03,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:03,435 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:00:03,435 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-10-22 09:00:03,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474797391] [2019-10-22 09:00:03,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:03,436 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:03,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:03,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:03,437 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2019-10-22 09:00:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:03,477 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2019-10-22 09:00:03,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:00:03,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-22 09:00:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:03,481 INFO L225 Difference]: With dead ends: 47 [2019-10-22 09:00:03,481 INFO L226 Difference]: Without dead ends: 47 [2019-10-22 09:00:03,482 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-22 09:00:03,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-10-22 09:00:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-22 09:00:03,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2019-10-22 09:00:03,494 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 14 [2019-10-22 09:00:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:03,495 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2019-10-22 09:00:03,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2019-10-22 09:00:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 09:00:03,495 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:03,496 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:03,697 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:03,698 INFO L410 AbstractCegarLoop]: === Iteration 4 === [test_funErr1REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 09:00:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:03,698 INFO L82 PathProgramCache]: Analyzing trace with hash -287755813, now seen corresponding path program 1 times [2019-10-22 09:00:03,698 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:03,698 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130519482] [2019-10-22 09:00:03,699 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:03,699 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:03,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:03,793 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 09:00:03,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130519482] [2019-10-22 09:00:03,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578890757] [2019-10-22 09:00:03,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/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 09:00:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:03,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 09:00:03,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:03,962 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 8 treesize of output 7 [2019-10-22 09:00:03,966 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:00:03,996 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:00:03,997 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 09:00:03,997 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2019-10-22 09:00:04,076 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 09:00:04,077 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:04,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-10-22 09:00:04,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640862596] [2019-10-22 09:00:04,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:00:04,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:04,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:00:04,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:04,079 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 8 states. [2019-10-22 09:00:04,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:04,233 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2019-10-22 09:00:04,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:04,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-10-22 09:00:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:04,235 INFO L225 Difference]: With dead ends: 44 [2019-10-22 09:00:04,235 INFO L226 Difference]: Without dead ends: 44 [2019-10-22 09:00:04,235 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-22 09:00:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2019-10-22 09:00:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-22 09:00:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2019-10-22 09:00:04,240 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14 [2019-10-22 09:00:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:04,241 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2019-10-22 09:00:04,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:00:04,241 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2019-10-22 09:00:04,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:00:04,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:04,248 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:04,448 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:04,449 INFO L410 AbstractCegarLoop]: === Iteration 5 === [test_funErr1REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 09:00:04,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:04,449 INFO L82 PathProgramCache]: Analyzing trace with hash -479904616, now seen corresponding path program 1 times [2019-10-22 09:00:04,449 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:04,450 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924058748] [2019-10-22 09:00:04,450 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:04,450 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:04,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:04,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924058748] [2019-10-22 09:00:04,557 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:04,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:04,557 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609855251] [2019-10-22 09:00:04,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:04,558 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:04,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:04,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:04,559 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 6 states. [2019-10-22 09:00:04,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:04,707 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-10-22 09:00:04,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:04,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-10-22 09:00:04,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:04,708 INFO L225 Difference]: With dead ends: 38 [2019-10-22 09:00:04,708 INFO L226 Difference]: Without dead ends: 38 [2019-10-22 09:00:04,708 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:04,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-22 09:00:04,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-10-22 09:00:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-22 09:00:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2019-10-22 09:00:04,712 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 17 [2019-10-22 09:00:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:04,712 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-10-22 09:00:04,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2019-10-22 09:00:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:00:04,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:04,713 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:04,714 INFO L410 AbstractCegarLoop]: === Iteration 6 === [test_funErr1REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 09:00:04,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:04,714 INFO L82 PathProgramCache]: Analyzing trace with hash -479904615, now seen corresponding path program 1 times [2019-10-22 09:00:04,714 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:04,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209756579] [2019-10-22 09:00:04,714 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:04,715 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:04,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:00:04,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209756579] [2019-10-22 09:00:04,818 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:04,818 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:00:04,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271615400] [2019-10-22 09:00:04,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:00:04,819 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:04,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:00:04,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:04,819 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 7 states. [2019-10-22 09:00:05,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:05,053 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2019-10-22 09:00:05,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:05,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 09:00:05,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:05,056 INFO L225 Difference]: With dead ends: 49 [2019-10-22 09:00:05,056 INFO L226 Difference]: Without dead ends: 49 [2019-10-22 09:00:05,057 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:00:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-22 09:00:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-10-22 09:00:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 09:00:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2019-10-22 09:00:05,061 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 17 [2019-10-22 09:00:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:05,062 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2019-10-22 09:00:05,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:00:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2019-10-22 09:00:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 09:00:05,063 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:05,063 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:05,063 INFO L410 AbstractCegarLoop]: === Iteration 7 === [test_funErr1REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 09:00:05,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:05,064 INFO L82 PathProgramCache]: Analyzing trace with hash -19725524, now seen corresponding path program 1 times [2019-10-22 09:00:05,064 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:05,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421456680] [2019-10-22 09:00:05,064 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:05,065 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:05,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:00:05,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421456680] [2019-10-22 09:00:05,231 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65425963] [2019-10-22 09:00:05,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/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 09:00:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:05,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:00:05,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:00:05,433 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:00:05,433 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2019-10-22 09:00:05,433 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660408570] [2019-10-22 09:00:05,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:05,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:05,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:05,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:00:05,434 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 6 states. [2019-10-22 09:00:05,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:05,534 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2019-10-22 09:00:05,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:05,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-10-22 09:00:05,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:05,535 INFO L225 Difference]: With dead ends: 65 [2019-10-22 09:00:05,536 INFO L226 Difference]: Without dead ends: 65 [2019-10-22 09:00:05,536 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-22 09:00:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-10-22 09:00:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2019-10-22 09:00:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-10-22 09:00:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2019-10-22 09:00:05,543 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 21 [2019-10-22 09:00:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:05,544 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2019-10-22 09:00:05,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2019-10-22 09:00:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 09:00:05,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:05,545 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:05,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:05,746 INFO L410 AbstractCegarLoop]: === Iteration 8 === [test_funErr1REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 09:00:05,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:05,746 INFO L82 PathProgramCache]: Analyzing trace with hash -55167689, now seen corresponding path program 1 times [2019-10-22 09:00:05,746 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:05,746 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875881393] [2019-10-22 09:00:05,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:05,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:05,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:00:05,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875881393] [2019-10-22 09:00:05,814 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:05,815 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:00:05,815 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873495217] [2019-10-22 09:00:05,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:00:05,815 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:05,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:00:05,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:05,816 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 7 states. [2019-10-22 09:00:06,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:06,050 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2019-10-22 09:00:06,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 09:00:06,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-10-22 09:00:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:06,053 INFO L225 Difference]: With dead ends: 96 [2019-10-22 09:00:06,054 INFO L226 Difference]: Without dead ends: 90 [2019-10-22 09:00:06,054 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-10-22 09:00:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-10-22 09:00:06,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 59. [2019-10-22 09:00:06,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-10-22 09:00:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2019-10-22 09:00:06,067 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 21 [2019-10-22 09:00:06,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:06,068 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2019-10-22 09:00:06,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:00:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2019-10-22 09:00:06,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 09:00:06,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:06,069 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:06,069 INFO L410 AbstractCegarLoop]: === Iteration 9 === [test_funErr1REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 09:00:06,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:06,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589202, now seen corresponding path program 1 times [2019-10-22 09:00:06,069 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:06,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602148996] [2019-10-22 09:00:06,070 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:06,070 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:06,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:00:06,217 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602148996] [2019-10-22 09:00:06,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346612268] [2019-10-22 09:00:06,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:06,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:00:06,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:06,392 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:06,392 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-10-22 09:00:06,393 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880365904] [2019-10-22 09:00:06,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 09:00:06,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:06,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 09:00:06,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:00:06,394 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 15 states. [2019-10-22 09:00:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:06,891 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2019-10-22 09:00:06,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 09:00:06,892 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2019-10-22 09:00:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:06,893 INFO L225 Difference]: With dead ends: 81 [2019-10-22 09:00:06,893 INFO L226 Difference]: Without dead ends: 81 [2019-10-22 09:00:06,893 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2019-10-22 09:00:06,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-10-22 09:00:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 54. [2019-10-22 09:00:06,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-22 09:00:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2019-10-22 09:00:06,899 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 21 [2019-10-22 09:00:06,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:06,899 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2019-10-22 09:00:06,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 09:00:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2019-10-22 09:00:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:00:06,900 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:06,901 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:07,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:07,102 INFO L410 AbstractCegarLoop]: === Iteration 10 === [test_funErr1REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 09:00:07,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:07,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2014807478, now seen corresponding path program 1 times [2019-10-22 09:00:07,102 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:07,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831088348] [2019-10-22 09:00:07,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:07,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:07,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:00:07,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831088348] [2019-10-22 09:00:07,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:07,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:07,168 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262834685] [2019-10-22 09:00:07,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:07,169 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:07,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:07,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:07,169 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 6 states. [2019-10-22 09:00:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:07,276 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2019-10-22 09:00:07,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:07,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-22 09:00:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:07,277 INFO L225 Difference]: With dead ends: 73 [2019-10-22 09:00:07,277 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:00:07,277 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:07,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:00:07,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:00:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:00:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:00:07,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-10-22 09:00:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:07,278 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:07,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:07,278 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:00:07,278 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:00:07,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:00:07 BoogieIcfgContainer [2019-10-22 09:00:07,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:00:07,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:07,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:07,286 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:07,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:02" (3/4) ... [2019-10-22 09:00:07,290 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:00:07,297 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-10-22 09:00:07,297 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-10-22 09:00:07,297 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure test_fun [2019-10-22 09:00:07,297 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-10-22 09:00:07,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-10-22 09:00:07,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-10-22 09:00:07,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-10-22 09:00:07,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-10-22 09:00:07,302 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-10-22 09:00:07,302 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-10-22 09:00:07,303 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 09:00:07,353 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9a6258e3-a7ee-420a-8db7-662975c290b6/bin/uautomizer/witness.graphml [2019-10-22 09:00:07,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:07,357 INFO L168 Benchmark]: Toolchain (without parser) took 5935.36 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 262.1 MB). Free memory was 939.1 MB in the beginning and 983.8 MB in the end (delta: -44.6 MB). Peak memory consumption was 217.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:07,358 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:07,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 551.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.7 MB). Free memory was 939.1 MB in the beginning and 1.2 GB in the end (delta: -235.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:07,358 INFO L168 Benchmark]: Boogie Preprocessor took 42.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:07,358 INFO L168 Benchmark]: RCFGBuilder took 426.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:07,359 INFO L168 Benchmark]: TraceAbstraction took 4838.38 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 993.9 MB in the end (delta: 133.3 MB). Peak memory consumption was 196.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:07,359 INFO L168 Benchmark]: Witness Printer took 70.68 ms. Allocated memory is still 1.3 GB. Free memory was 993.9 MB in the beginning and 983.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:07,363 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 551.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.7 MB). Free memory was 939.1 MB in the beginning and 1.2 GB in the end (delta: -235.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 426.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4838.38 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 993.9 MB in the end (delta: 133.3 MB). Peak memory consumption was 196.7 MB. Max. memory is 11.5 GB. * Witness Printer took 70.68 ms. Allocated memory is still 1.3 GB. Free memory was 993.9 MB in the beginning and 983.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 54 locations, 9 error locations. Result: SAFE, OverallTime: 4.7s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 249 SDtfs, 574 SDslu, 378 SDs, 0 SdLazy, 924 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 77 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 19953 SizeOfPredicates, 12 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 19/25 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 correct! Received shutdown request...