./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.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_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/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 b9551eac17e9ca0a42612f73eb01545dde991582 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:57:48,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:48,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:48,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:48,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:48,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:48,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:48,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:48,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:48,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:48,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:48,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:48,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:48,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:48,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:48,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:48,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:48,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:48,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:48,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:48,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:48,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:48,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:48,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:48,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:48,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:48,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:48,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:48,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:48,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:48,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:48,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:48,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:48,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:48,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:48,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:48,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:48,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:48,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:48,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:48,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:48,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:57:48,707 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:48,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:48,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:48,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:48,708 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:48,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:48,709 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:48,709 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:57:48,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:48,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:48,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:48,710 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:57:48,710 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:57:48,710 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:57:48,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:48,713 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:48,714 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:48,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:48,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:48,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:48,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:48,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:48,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:48,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:48,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:48,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:57:48,715 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_f833761d-df54-4242-bf41-ace618c60267/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 -> b9551eac17e9ca0a42612f73eb01545dde991582 [2019-10-22 08:57:48,744 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:48,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:48,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:48,760 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:48,760 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:48,761 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2019-10-22 08:57:48,809 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/data/3fa99aeed/21f935cbfda249b6867ca60525e353a7/FLAG32f7dbc7c [2019-10-22 08:57:49,234 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:49,235 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2019-10-22 08:57:49,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/data/3fa99aeed/21f935cbfda249b6867ca60525e353a7/FLAG32f7dbc7c [2019-10-22 08:57:49,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/data/3fa99aeed/21f935cbfda249b6867ca60525e353a7 [2019-10-22 08:57:49,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:49,258 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:57:49,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:49,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:49,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:49,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b5808b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49, skipping insertion in model container [2019-10-22 08:57:49,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,272 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:49,311 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:49,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:49,689 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:49,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:49,775 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:49,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49 WrapperNode [2019-10-22 08:57:49,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:49,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:49,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:49,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:49,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:49,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:49,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:49,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:49,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:57:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:57:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:57:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 08:57:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 08:57:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 08:57:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:57:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:57:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:57:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:57:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:57:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:57:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:57:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:57:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:57:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:57:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:57:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:57:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:57:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:57:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:57:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:57:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:57:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:57:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:57:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 08:57:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 08:57:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 08:57:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:57:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:57:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:57:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:57:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:57:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:57:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:57:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:57:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:57:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:57:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:57:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:57:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:57:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:57:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:57:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:57:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:57:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:57:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:57:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:57:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:57:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:57:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:57:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:57:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:57:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:57:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:57:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:57:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:57:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:57:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:57:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:57:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:57:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:57:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:57:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:57:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:57:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:57:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:57:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:57:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:57:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:57:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:57:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:57:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:57:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:57:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:57:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:57:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:57:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:57:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:57:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:57:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:57:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:57:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:57:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:57:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:57:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:57:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:57:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:57:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:57:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:57:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:57:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:57:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:57:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:57:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:57:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:57:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:57:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:57:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:57:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:57:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:57:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:57:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:57:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:57:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:57:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:57:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:57:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:57:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:57:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:57:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:57:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:57:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:57:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:57:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 08:57:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:57:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:57:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:57:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:57:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:57:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:57:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:50,329 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:50,329 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-22 08:57:50,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:50 BoogieIcfgContainer [2019-10-22 08:57:50,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:50,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:50,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:50,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:50,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:49" (1/3) ... [2019-10-22 08:57:50,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2fc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:50, skipping insertion in model container [2019-10-22 08:57:50,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (2/3) ... [2019-10-22 08:57:50,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2fc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:50, skipping insertion in model container [2019-10-22 08:57:50,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:50" (3/3) ... [2019-10-22 08:57:50,338 INFO L109 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2019-10-22 08:57:50,346 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:50,353 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-10-22 08:57:50,364 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-10-22 08:57:50,382 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:50,382 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:57:50,382 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:50,382 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:50,383 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:50,383 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:50,383 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:50,383 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:50,396 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-22 08:57:50,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:57:50,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:50,405 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:50,407 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:50,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2019-10-22 08:57:50,420 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:50,420 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404393271] [2019-10-22 08:57:50,420 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:50,420 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:50,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:50,507 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:50,507 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630163126] [2019-10-22 08:57:50,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:50,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 08:57:50,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:50,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404393271] [2019-10-22 08:57:50,677 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:50,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630163126] [2019-10-22 08:57:50,677 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:50,678 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:57:50,678 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844942514] [2019-10-22 08:57:50,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:57:50,683 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:50,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:50,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:50,699 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-10-22 08:57:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:50,738 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-10-22 08:57:50,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:50,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-22 08:57:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:50,749 INFO L225 Difference]: With dead ends: 33 [2019-10-22 08:57:50,749 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 08:57:50,750 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:50,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 08:57:50,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-22 08:57:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:57:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-10-22 08:57:50,788 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2019-10-22 08:57:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:50,789 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-10-22 08:57:50,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:57:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-10-22 08:57:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:57:50,790 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:50,790 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:50,991 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:50,991 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:50,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:50,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2019-10-22 08:57:50,992 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:50,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881569880] [2019-10-22 08:57:50,992 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:50,992 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:50,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:51,006 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:51,008 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572850768] [2019-10-22 08:57:51,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:51,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:51,176 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-22 08:57:51,177 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-10-22 08:57:51,177 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:57:51,185 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:57:51,186 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 08:57:51,187 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-10-22 08:57:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881569880] [2019-10-22 08:57:51,202 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:51,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572850768] [2019-10-22 08:57:51,202 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:51,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:57:51,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716907818] [2019-10-22 08:57:51,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:57:51,204 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:51,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:51,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:51,205 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2019-10-22 08:57:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:51,238 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-10-22 08:57:51,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:51,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-22 08:57:51,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:51,240 INFO L225 Difference]: With dead ends: 28 [2019-10-22 08:57:51,240 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 08:57:51,241 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:51,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 08:57:51,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-22 08:57:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 08:57:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-10-22 08:57:51,245 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2019-10-22 08:57:51,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:51,245 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-10-22 08:57:51,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:57:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-10-22 08:57:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:57:51,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:51,246 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:51,447 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:51,447 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:51,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:51,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2019-10-22 08:57:51,448 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:51,448 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389339946] [2019-10-22 08:57:51,452 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,453 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:51,481 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:51,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976843082] [2019-10-22 08:57:51,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-22 08:57:51,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:51,605 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_25|]} [2019-10-22 08:57:51,611 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:57:51,613 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2019-10-22 08:57:51,613 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:57:51,629 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:57:51,638 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-10-22 08:57:51,639 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 08:57:51,649 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:57:51,653 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-22 08:57:51,653 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:30, output treesize:35 [2019-10-22 08:57:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389339946] [2019-10-22 08:57:51,694 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:51,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976843082] [2019-10-22 08:57:51,694 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:51,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:57:51,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946414285] [2019-10-22 08:57:51,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:51,695 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:51,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:51,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:51,696 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2019-10-22 08:57:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:51,798 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2019-10-22 08:57:51,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:57:51,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-22 08:57:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:51,800 INFO L225 Difference]: With dead ends: 32 [2019-10-22 08:57:51,800 INFO L226 Difference]: Without dead ends: 32 [2019-10-22 08:57:51,800 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:57:51,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-22 08:57:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-10-22 08:57:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:57:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-10-22 08:57:51,804 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2019-10-22 08:57:51,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:51,805 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-10-22 08:57:51,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:51,805 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-10-22 08:57:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:57:51,806 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:51,806 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:52,006 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:52,007 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:52,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:52,007 INFO L82 PathProgramCache]: Analyzing trace with hash -650126436, now seen corresponding path program 1 times [2019-10-22 08:57:52,007 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:52,007 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135924562] [2019-10-22 08:57:52,007 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:52,008 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:52,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:52,018 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:52,018 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568382768] [2019-10-22 08:57:52,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/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 08:57:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:52,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:52,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:52,141 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 08:57:52,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135924562] [2019-10-22 08:57:52,142 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:52,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568382768] [2019-10-22 08:57:52,142 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:52,142 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:57:52,142 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723563295] [2019-10-22 08:57:52,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:52,143 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:52,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:52,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:52,143 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2019-10-22 08:57:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:52,207 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2019-10-22 08:57:52,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:57:52,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-10-22 08:57:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:52,209 INFO L225 Difference]: With dead ends: 51 [2019-10-22 08:57:52,209 INFO L226 Difference]: Without dead ends: 51 [2019-10-22 08:57:52,209 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:52,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-10-22 08:57:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2019-10-22 08:57:52,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 08:57:52,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-10-22 08:57:52,216 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 17 [2019-10-22 08:57:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:52,216 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-10-22 08:57:52,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-10-22 08:57:52,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:57:52,217 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:52,217 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:52,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:52,418 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:52,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:52,418 INFO L82 PathProgramCache]: Analyzing trace with hash 50938142, now seen corresponding path program 1 times [2019-10-22 08:57:52,419 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:52,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687242951] [2019-10-22 08:57:52,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:52,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:52,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:52,435 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:52,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008774035] [2019-10-22 08:57:52,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:52,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-22 08:57:52,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:52,522 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_26|]} [2019-10-22 08:57:52,526 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:57:52,528 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2019-10-22 08:57:52,528 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:57:52,539 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:57:52,547 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-10-22 08:57:52,548 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 08:57:52,561 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:57:52,562 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-22 08:57:52,562 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:24 [2019-10-22 08:57:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:52,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687242951] [2019-10-22 08:57:52,661 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:52,661 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008774035] [2019-10-22 08:57:52,661 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:57:52,661 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-10-22 08:57:52,661 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208090058] [2019-10-22 08:57:52,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:57:52,662 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:52,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:57:52,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:57:52,663 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2019-10-22 08:57:53,644 WARN L191 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2019-10-22 08:57:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:53,684 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-10-22 08:57:53,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:57:53,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-10-22 08:57:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:53,686 INFO L225 Difference]: With dead ends: 40 [2019-10-22 08:57:53,686 INFO L226 Difference]: Without dead ends: 40 [2019-10-22 08:57:53,686 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:57:53,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-22 08:57:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-10-22 08:57:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 08:57:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-10-22 08:57:53,690 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 17 [2019-10-22 08:57:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:53,691 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-10-22 08:57:53,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:57:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-10-22 08:57:53,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:57:53,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:53,692 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:53,892 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:53,893 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:53,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:53,893 INFO L82 PathProgramCache]: Analyzing trace with hash -2001298264, now seen corresponding path program 1 times [2019-10-22 08:57:53,893 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:53,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29896195] [2019-10-22 08:57:53,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:53,894 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:53,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:53,902 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:53,902 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133441112] [2019-10-22 08:57:53,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:53,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:57:53,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:54,085 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 08:57:54,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29896195] [2019-10-22 08:57:54,085 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:54,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133441112] [2019-10-22 08:57:54,086 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:54,086 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:57:54,086 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984156069] [2019-10-22 08:57:54,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:57:54,086 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:54,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:57:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:57:54,087 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2019-10-22 08:57:54,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:54,165 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2019-10-22 08:57:54,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:57:54,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-10-22 08:57:54,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:54,169 INFO L225 Difference]: With dead ends: 48 [2019-10-22 08:57:54,169 INFO L226 Difference]: Without dead ends: 48 [2019-10-22 08:57:54,170 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:57:54,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-22 08:57:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2019-10-22 08:57:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-22 08:57:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2019-10-22 08:57:54,173 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2019-10-22 08:57:54,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:54,174 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2019-10-22 08:57:54,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:57:54,174 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2019-10-22 08:57:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:57:54,174 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:54,174 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:54,377 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:54,378 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:54,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:54,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1706863018, now seen corresponding path program 1 times [2019-10-22 08:57:54,378 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:54,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413596427] [2019-10-22 08:57:54,378 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:54,378 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:54,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:54,385 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:54,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691648787] [2019-10-22 08:57:54,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:54,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 08:57:54,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:54,540 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 08:57:54,540 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413596427] [2019-10-22 08:57:54,540 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:54,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691648787] [2019-10-22 08:57:54,541 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:54,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:57:54,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330362930] [2019-10-22 08:57:54,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:57:54,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:54,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:57:54,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:57:54,542 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 8 states. [2019-10-22 08:57:54,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:54,603 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2019-10-22 08:57:54,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:57:54,603 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-10-22 08:57:54,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:54,604 INFO L225 Difference]: With dead ends: 45 [2019-10-22 08:57:54,604 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 08:57:54,604 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:57:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 08:57:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2019-10-22 08:57:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 08:57:54,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-22 08:57:54,607 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2019-10-22 08:57:54,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:54,608 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-22 08:57:54,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:57:54,608 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-22 08:57:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 08:57:54,608 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:54,608 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] [2019-10-22 08:57:54,809 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:54,809 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:54,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:54,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1910705585, now seen corresponding path program 1 times [2019-10-22 08:57:54,810 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:54,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393931900] [2019-10-22 08:57:54,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:54,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:54,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:54,815 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:54,815 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639946908] [2019-10-22 08:57:54,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:54,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:57:54,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:54,906 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 08:57:54,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393931900] [2019-10-22 08:57:54,906 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:54,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639946908] [2019-10-22 08:57:54,906 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:54,906 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:57:54,907 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799204036] [2019-10-22 08:57:54,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:54,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:54,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:54,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:54,907 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2019-10-22 08:57:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:54,950 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2019-10-22 08:57:54,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:57:54,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-22 08:57:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:54,950 INFO L225 Difference]: With dead ends: 66 [2019-10-22 08:57:54,950 INFO L226 Difference]: Without dead ends: 66 [2019-10-22 08:57:54,951 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:54,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-22 08:57:54,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2019-10-22 08:57:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 08:57:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2019-10-22 08:57:54,956 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 20 [2019-10-22 08:57:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:54,957 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2019-10-22 08:57:54,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2019-10-22 08:57:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 08:57:54,957 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:54,958 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] [2019-10-22 08:57:55,158 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:55,158 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:55,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:55,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704045, now seen corresponding path program 1 times [2019-10-22 08:57:55,159 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:55,159 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749851020] [2019-10-22 08:57:55,159 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:55,159 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:55,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:55,166 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:55,167 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907330108] [2019-10-22 08:57:55,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:55,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:55,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:55,244 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-22 08:57:55,245 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-10-22 08:57:55,245 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:57:55,249 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:57:55,250 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 08:57:55,250 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-10-22 08:57:55,258 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 08:57:55,258 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749851020] [2019-10-22 08:57:55,258 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:55,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907330108] [2019-10-22 08:57:55,259 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:55,259 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:57:55,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671311771] [2019-10-22 08:57:55,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:57:55,259 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:55,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:55,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:55,260 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 3 states. [2019-10-22 08:57:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:55,271 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2019-10-22 08:57:55,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:55,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-22 08:57:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:55,273 INFO L225 Difference]: With dead ends: 44 [2019-10-22 08:57:55,273 INFO L226 Difference]: Without dead ends: 44 [2019-10-22 08:57:55,273 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:55,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-22 08:57:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-10-22 08:57:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-22 08:57:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2019-10-22 08:57:55,276 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 20 [2019-10-22 08:57:55,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:55,276 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2019-10-22 08:57:55,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:57:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2019-10-22 08:57:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 08:57:55,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:55,277 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] [2019-10-22 08:57:55,477 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:55,478 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:55,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704044, now seen corresponding path program 1 times [2019-10-22 08:57:55,478 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:55,478 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360554241] [2019-10-22 08:57:55,478 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:55,478 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:55,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:55,485 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:55,485 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393250139] [2019-10-22 08:57:55,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:55,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 08:57:55,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:55,581 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:57:55,581 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 1 case distinctions, treesize of input 15 treesize of output 35 [2019-10-22 08:57:55,582 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:57:55,595 INFO L567 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2019-10-22 08:57:55,596 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:57:55,596 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:13 [2019-10-22 08:57:55,622 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 08:57:55,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360554241] [2019-10-22 08:57:55,623 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:55,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393250139] [2019-10-22 08:57:55,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:55,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:57:55,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296188518] [2019-10-22 08:57:55,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:55,624 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:55,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:55,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:55,624 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2019-10-22 08:57:55,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:55,674 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-10-22 08:57:55,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:57:55,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-22 08:57:55,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:55,675 INFO L225 Difference]: With dead ends: 43 [2019-10-22 08:57:55,675 INFO L226 Difference]: Without dead ends: 43 [2019-10-22 08:57:55,675 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:57:55,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-22 08:57:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-22 08:57:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-22 08:57:55,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-10-22 08:57:55,678 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 20 [2019-10-22 08:57:55,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:55,679 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-10-22 08:57:55,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:55,679 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-10-22 08:57:55,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 08:57:55,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:55,680 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] [2019-10-22 08:57:55,880 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:55,880 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:55,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:55,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1652540147, now seen corresponding path program 1 times [2019-10-22 08:57:55,881 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:55,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511309773] [2019-10-22 08:57:55,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:55,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:55,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:55,887 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:55,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978984153] [2019-10-22 08:57:55,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:55,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:57:55,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:55,970 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 08:57:55,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511309773] [2019-10-22 08:57:55,971 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:55,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978984153] [2019-10-22 08:57:55,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:55,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:57:55,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551448041] [2019-10-22 08:57:55,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:55,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:55,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:55,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:55,972 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 5 states. [2019-10-22 08:57:56,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:56,024 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2019-10-22 08:57:56,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:57:56,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-22 08:57:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:56,025 INFO L225 Difference]: With dead ends: 57 [2019-10-22 08:57:56,025 INFO L226 Difference]: Without dead ends: 57 [2019-10-22 08:57:56,025 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-22 08:57:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 36. [2019-10-22 08:57:56,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 08:57:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-22 08:57:56,027 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2019-10-22 08:57:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:56,028 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-22 08:57:56,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-22 08:57:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 08:57:56,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:56,028 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] [2019-10-22 08:57:56,232 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:56,232 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:56,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:56,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1373144461, now seen corresponding path program 1 times [2019-10-22 08:57:56,233 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:56,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103426783] [2019-10-22 08:57:56,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:56,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:56,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:56,241 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:56,246 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206333309] [2019-10-22 08:57:56,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:56,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:57:56,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:56,332 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 08:57:56,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103426783] [2019-10-22 08:57:56,333 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:56,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206333309] [2019-10-22 08:57:56,333 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:56,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:57:56,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862802026] [2019-10-22 08:57:56,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:56,334 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:56,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:56,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:56,334 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2019-10-22 08:57:56,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:56,373 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2019-10-22 08:57:56,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:57:56,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-22 08:57:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:56,374 INFO L225 Difference]: With dead ends: 66 [2019-10-22 08:57:56,374 INFO L226 Difference]: Without dead ends: 66 [2019-10-22 08:57:56,374 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:56,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-22 08:57:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 43. [2019-10-22 08:57:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-22 08:57:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-10-22 08:57:56,377 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 20 [2019-10-22 08:57:56,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:56,377 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-10-22 08:57:56,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:56,377 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-10-22 08:57:56,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 08:57:56,378 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:56,378 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] [2019-10-22 08:57:56,578 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:56,578 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2019-10-22 08:57:56,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:56,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1631309899, now seen corresponding path program 1 times [2019-10-22 08:57:56,579 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:56,579 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185964358] [2019-10-22 08:57:56,579 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:56,579 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:56,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:56,585 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:57:56,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65688384] [2019-10-22 08:57:56,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:56,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:57:56,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:56,664 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 08:57:56,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185964358] [2019-10-22 08:57:56,664 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:57:56,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65688384] [2019-10-22 08:57:56,664 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:56,665 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:57:56,665 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948287555] [2019-10-22 08:57:56,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:56,665 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:56,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:56,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:56,665 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2019-10-22 08:57:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:56,706 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-10-22 08:57:56,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:57:56,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-22 08:57:56,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:56,707 INFO L225 Difference]: With dead ends: 42 [2019-10-22 08:57:56,707 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:57:56,707 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:56,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:57:56,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:57:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:57:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:57:56,708 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-10-22 08:57:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:56,708 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:56,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:56,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:57:56,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:57:56,909 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:56,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:57:56 BoogieIcfgContainer [2019-10-22 08:57:56,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:57:56,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:56,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:56,914 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:56,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:50" (3/4) ... [2019-10-22 08:57:56,917 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:57:56,928 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-10-22 08:57:56,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-10-22 08:57:56,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-10-22 08:57:56,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-10-22 08:57:56,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-10-22 08:57:56,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-10-22 08:57:56,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-10-22 08:57:56,933 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 08:57:56,933 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-10-22 08:57:56,933 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:57:56,934 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:57:56,981 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f833761d-df54-4242-bf41-ace618c60267/bin/uautomizer/witness.graphml [2019-10-22 08:57:56,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:56,982 INFO L168 Benchmark]: Toolchain (without parser) took 7724.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 217.6 MB). Free memory was 939.1 MB in the beginning and 871.4 MB in the end (delta: 67.7 MB). Peak memory consumption was 285.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:56,982 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:56,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:56,983 INFO L168 Benchmark]: Boogie Preprocessor took 43.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:56,983 INFO L168 Benchmark]: RCFGBuilder took 510.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:56,983 INFO L168 Benchmark]: TraceAbstraction took 6581.41 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 79.7 MB). Free memory was 1.1 GB in the beginning and 882.2 MB in the end (delta: 185.9 MB). Peak memory consumption was 265.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:56,984 INFO L168 Benchmark]: Witness Printer took 67.58 ms. Allocated memory is still 1.2 GB. Free memory was 882.2 MB in the beginning and 871.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:56,985 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 517.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 510.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6581.41 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 79.7 MB). Free memory was 1.1 GB in the beginning and 882.2 MB in the end (delta: 185.9 MB). Peak memory consumption was 265.6 MB. Max. memory is 11.5 GB. * Witness Printer took 67.58 ms. Allocated memory is still 1.2 GB. Free memory was 882.2 MB in the beginning and 871.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 7 error locations. Result: SAFE, OverallTime: 6.5s, OverallIterations: 13, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 258 SDtfs, 336 SDslu, 368 SDs, 0 SdLazy, 448 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=8, 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, 13 MinimizatonAttempts, 96 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 217 ConstructedInterpolants, 13 QuantifiedInterpolants, 25920 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1056 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 11/12 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...