./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 50bdaf600d03af0a677a59daf6a875dbe69c10b2 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:39:52,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:39:52,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:39:52,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:39:52,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:39:52,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:39:52,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:39:52,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:39:52,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:39:52,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:39:52,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:39:52,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:39:52,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:39:52,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:39:52,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:39:52,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:39:52,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:39:52,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:39:52,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:39:52,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:39:52,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:39:52,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:39:52,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:39:52,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:39:52,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:39:52,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:39:52,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:39:52,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:39:52,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:39:52,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:39:52,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:39:52,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:39:52,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:39:52,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:39:52,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:39:52,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:39:52,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:39:52,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:39:52,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:39:52,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:39:52,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:39:52,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 21:39:52,854 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:39:52,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:39:52,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:39:52,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:39:52,859 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:39:52,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:39:52,859 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:39:52,859 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:39:52,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:39:52,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:39:52,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:39:52,862 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 21:39:52,862 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 21:39:52,862 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 21:39:52,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:39:52,863 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:39:52,863 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:39:52,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:39:52,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:39:52,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:39:52,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:39:52,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:39:52,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:39:52,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:39:52,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:39:52,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:39:52,866 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/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 -> 50bdaf600d03af0a677a59daf6a875dbe69c10b2 [2019-11-15 21:39:52,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:39:52,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:39:52,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:39:52,936 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:39:52,937 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:39:52,938 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2019-11-15 21:39:53,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/data/aab3b0bc5/9e29337f502c4ff29351688e95775b7b/FLAGddead359d [2019-11-15 21:39:53,439 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:39:53,440 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2019-11-15 21:39:53,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/data/aab3b0bc5/9e29337f502c4ff29351688e95775b7b/FLAGddead359d [2019-11-15 21:39:53,742 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/data/aab3b0bc5/9e29337f502c4ff29351688e95775b7b [2019-11-15 21:39:53,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:39:53,746 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 21:39:53,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:39:53,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:39:53,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:39:53,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:39:53" (1/1) ... [2019-11-15 21:39:53,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f56ae3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:53, skipping insertion in model container [2019-11-15 21:39:53,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:39:53" (1/1) ... [2019-11-15 21:39:53,764 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:39:53,805 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:39:54,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:39:54,251 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:39:54,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:39:54,375 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:39:54,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:54 WrapperNode [2019-11-15 21:39:54,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:39:54,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:39:54,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:39:54,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:39:54,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:54" (1/1) ... [2019-11-15 21:39:54,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:54" (1/1) ... [2019-11-15 21:39:54,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:54" (1/1) ... [2019-11-15 21:39:54,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:54" (1/1) ... [2019-11-15 21:39:54,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:54" (1/1) ... [2019-11-15 21:39:54,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:54" (1/1) ... [2019-11-15 21:39:54,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:54" (1/1) ... [2019-11-15 21:39:54,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:39:54,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:39:54,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:39:54,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:39:54,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:39:54,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 21:39:54,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:39:54,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 21:39:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 21:39:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-15 21:39:54,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-15 21:39:54,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-15 21:39:54,539 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrreplace [2019-11-15 21:39:54,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 21:39:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 21:39:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 21:39:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 21:39:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 21:39:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 21:39:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 21:39:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 21:39:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 21:39:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 21:39:54,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 21:39:54,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 21:39:54,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 21:39:54,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 21:39:54,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 21:39:54,546 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 21:39:54,546 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 21:39:54,547 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 21:39:54,547 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 21:39:54,547 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-15 21:39:54,547 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-15 21:39:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-15 21:39:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 21:39:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 21:39:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 21:39:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 21:39:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 21:39:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 21:39:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 21:39:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 21:39:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 21:39:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 21:39:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 21:39:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 21:39:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 21:39:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 21:39:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 21:39:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 21:39:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 21:39:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 21:39:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 21:39:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 21:39:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 21:39:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 21:39:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 21:39:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 21:39:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 21:39:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 21:39:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 21:39:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 21:39:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 21:39:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 21:39:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 21:39:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 21:39:54,557 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 21:39:54,557 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 21:39:54,557 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 21:39:54,557 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 21:39:54,557 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 21:39:54,558 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 21:39:54,558 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 21:39:54,558 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 21:39:54,559 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 21:39:54,559 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 21:39:54,560 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 21:39:54,560 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 21:39:54,561 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 21:39:54,561 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 21:39:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 21:39:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 21:39:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 21:39:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 21:39:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 21:39:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 21:39:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 21:39:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 21:39:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 21:39:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 21:39:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 21:39:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 21:39:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 21:39:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 21:39:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 21:39:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 21:39:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 21:39:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 21:39:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 21:39:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 21:39:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 21:39:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 21:39:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 21:39:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 21:39:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 21:39:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 21:39:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 21:39:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 21:39:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 21:39:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 21:39:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 21:39:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 21:39:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 21:39:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 21:39:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 21:39:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 21:39:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 21:39:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 21:39:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 21:39:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 21:39:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-15 21:39:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-15 21:39:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure cstrreplace [2019-11-15 21:39:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:39:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 21:39:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 21:39:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:39:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:39:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 21:39:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:39:55,353 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:39:55,353 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-15 21:39:55,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:39:55 BoogieIcfgContainer [2019-11-15 21:39:55,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:39:55,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:39:55,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:39:55,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:39:55,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:39:53" (1/3) ... [2019-11-15 21:39:55,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3772226b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:39:55, skipping insertion in model container [2019-11-15 21:39:55,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:54" (2/3) ... [2019-11-15 21:39:55,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3772226b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:39:55, skipping insertion in model container [2019-11-15 21:39:55,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:39:55" (3/3) ... [2019-11-15 21:39:55,364 INFO L109 eAbstractionObserver]: Analyzing ICFG strreplace-alloca-2.i [2019-11-15 21:39:55,374 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:39:55,385 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-11-15 21:39:55,399 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-11-15 21:39:55,429 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:39:55,429 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 21:39:55,429 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:39:55,430 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:39:55,430 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:39:55,430 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:39:55,430 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:39:55,430 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:39:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-11-15 21:39:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 21:39:55,459 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:55,460 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:39:55,462 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:39:55,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:55,468 INFO L82 PathProgramCache]: Analyzing trace with hash -610270170, now seen corresponding path program 1 times [2019-11-15 21:39:55,478 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:55,478 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584899470] [2019-11-15 21:39:55,479 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:55,479 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:55,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:55,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584899470] [2019-11-15 21:39:55,664 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:39:55,664 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:39:55,664 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867462353] [2019-11-15 21:39:55,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:39:55,669 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:39:55,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:39:55,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:39:55,686 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2019-11-15 21:39:56,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:39:56,001 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2019-11-15 21:39:56,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:39:56,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-15 21:39:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:39:56,015 INFO L225 Difference]: With dead ends: 40 [2019-11-15 21:39:56,016 INFO L226 Difference]: Without dead ends: 37 [2019-11-15 21:39:56,017 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:39:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-15 21:39:56,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-15 21:39:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-15 21:39:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2019-11-15 21:39:56,070 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 10 [2019-11-15 21:39:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:39:56,071 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2019-11-15 21:39:56,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:39:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2019-11-15 21:39:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 21:39:56,071 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:56,072 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:39:56,072 INFO L410 AbstractCegarLoop]: === Iteration 2 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:39:56,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:56,072 INFO L82 PathProgramCache]: Analyzing trace with hash -610270169, now seen corresponding path program 1 times [2019-11-15 21:39:56,072 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:56,073 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594572339] [2019-11-15 21:39:56,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:56,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:56,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:56,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594572339] [2019-11-15 21:39:56,164 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:39:56,164 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 21:39:56,164 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340521427] [2019-11-15 21:39:56,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:39:56,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:39:56,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:39:56,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:39:56,167 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2019-11-15 21:39:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:39:56,314 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2019-11-15 21:39:56,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:39:56,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-15 21:39:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:39:56,316 INFO L225 Difference]: With dead ends: 36 [2019-11-15 21:39:56,316 INFO L226 Difference]: Without dead ends: 36 [2019-11-15 21:39:56,317 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:39:56,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-15 21:39:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-15 21:39:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-15 21:39:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2019-11-15 21:39:56,323 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 10 [2019-11-15 21:39:56,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:39:56,323 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2019-11-15 21:39:56,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:39:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2019-11-15 21:39:56,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 21:39:56,325 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:56,325 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:39:56,325 INFO L410 AbstractCegarLoop]: === Iteration 3 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:39:56,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:56,326 INFO L82 PathProgramCache]: Analyzing trace with hash -610270116, now seen corresponding path program 1 times [2019-11-15 21:39:56,326 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:56,326 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361541987] [2019-11-15 21:39:56,326 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:56,327 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:56,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:56,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361541987] [2019-11-15 21:39:56,396 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:39:56,396 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:39:56,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687156052] [2019-11-15 21:39:56,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:39:56,397 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:39:56,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:39:56,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:39:56,398 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 5 states. [2019-11-15 21:39:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:39:56,539 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2019-11-15 21:39:56,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:39:56,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-15 21:39:56,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:39:56,543 INFO L225 Difference]: With dead ends: 44 [2019-11-15 21:39:56,543 INFO L226 Difference]: Without dead ends: 44 [2019-11-15 21:39:56,544 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:39:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-15 21:39:56,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2019-11-15 21:39:56,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-15 21:39:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2019-11-15 21:39:56,561 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 10 [2019-11-15 21:39:56,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:39:56,562 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-11-15 21:39:56,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:39:56,562 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2019-11-15 21:39:56,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 21:39:56,563 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:56,563 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:39:56,573 INFO L410 AbstractCegarLoop]: === Iteration 4 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:39:56,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:56,574 INFO L82 PathProgramCache]: Analyzing trace with hash -610210534, now seen corresponding path program 1 times [2019-11-15 21:39:56,574 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:56,574 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954915664] [2019-11-15 21:39:56,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:56,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:56,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:56,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954915664] [2019-11-15 21:39:56,683 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:39:56,684 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 21:39:56,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249593326] [2019-11-15 21:39:56,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:39:56,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:39:56,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:39:56,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:39:56,685 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 5 states. [2019-11-15 21:39:56,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:39:56,903 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2019-11-15 21:39:56,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:39:56,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-15 21:39:56,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:39:56,906 INFO L225 Difference]: With dead ends: 48 [2019-11-15 21:39:56,906 INFO L226 Difference]: Without dead ends: 48 [2019-11-15 21:39:56,907 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:39:56,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-15 21:39:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2019-11-15 21:39:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-15 21:39:56,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-11-15 21:39:56,915 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 10 [2019-11-15 21:39:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:39:56,915 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-11-15 21:39:56,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:39:56,916 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-11-15 21:39:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 21:39:56,916 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:56,917 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:39:56,917 INFO L410 AbstractCegarLoop]: === Iteration 5 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:39:56,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:56,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041719, now seen corresponding path program 1 times [2019-11-15 21:39:56,918 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:56,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108696079] [2019-11-15 21:39:56,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:56,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:56,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:57,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108696079] [2019-11-15 21:39:57,093 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:39:57,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:39:57,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002731786] [2019-11-15 21:39:57,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:39:57,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:39:57,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:39:57,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:39:57,096 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2019-11-15 21:39:57,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:39:57,294 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2019-11-15 21:39:57,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:39:57,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-15 21:39:57,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:39:57,296 INFO L225 Difference]: With dead ends: 37 [2019-11-15 21:39:57,296 INFO L226 Difference]: Without dead ends: 37 [2019-11-15 21:39:57,296 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:39:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-15 21:39:57,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-15 21:39:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-15 21:39:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-11-15 21:39:57,307 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 14 [2019-11-15 21:39:57,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:39:57,308 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-11-15 21:39:57,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:39:57,309 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-11-15 21:39:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 21:39:57,311 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:57,311 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:39:57,311 INFO L410 AbstractCegarLoop]: === Iteration 6 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:39:57,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:57,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041720, now seen corresponding path program 1 times [2019-11-15 21:39:57,312 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:57,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115988451] [2019-11-15 21:39:57,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:57,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:57,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:57,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115988451] [2019-11-15 21:39:57,489 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:39:57,489 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 21:39:57,489 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233892896] [2019-11-15 21:39:57,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:39:57,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:39:57,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:39:57,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:39:57,491 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 8 states. [2019-11-15 21:39:57,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:39:57,730 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2019-11-15 21:39:57,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:39:57,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-15 21:39:57,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:39:57,734 INFO L225 Difference]: With dead ends: 47 [2019-11-15 21:39:57,734 INFO L226 Difference]: Without dead ends: 47 [2019-11-15 21:39:57,734 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-15 21:39:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-15 21:39:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2019-11-15 21:39:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-15 21:39:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-11-15 21:39:57,741 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 14 [2019-11-15 21:39:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:39:57,742 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-11-15 21:39:57,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:39:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-11-15 21:39:57,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 21:39:57,743 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:57,743 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:39:57,744 INFO L410 AbstractCegarLoop]: === Iteration 7 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:39:57,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:57,744 INFO L82 PathProgramCache]: Analyzing trace with hash 415323869, now seen corresponding path program 1 times [2019-11-15 21:39:57,745 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:57,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125852463] [2019-11-15 21:39:57,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:57,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:57,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:57,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125852463] [2019-11-15 21:39:57,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82810907] [2019-11-15 21:39:57,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:39:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:57,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 21:39:57,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:39:58,048 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 21:39:58,052 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:39:58,069 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:39:58,069 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:39:58,070 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 21:39:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:58,089 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:39:58,089 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2019-11-15 21:39:58,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650849979] [2019-11-15 21:39:58,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 21:39:58,090 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:39:58,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 21:39:58,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:39:58,091 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2019-11-15 21:39:58,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:39:58,301 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2019-11-15 21:39:58,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:39:58,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-15 21:39:58,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:39:58,304 INFO L225 Difference]: With dead ends: 49 [2019-11-15 21:39:58,304 INFO L226 Difference]: Without dead ends: 49 [2019-11-15 21:39:58,305 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:39:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-15 21:39:58,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2019-11-15 21:39:58,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-15 21:39:58,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-11-15 21:39:58,316 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 14 [2019-11-15 21:39:58,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:39:58,316 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-11-15 21:39:58,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 21:39:58,317 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-11-15 21:39:58,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:39:58,319 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:58,319 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:39:58,520 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:39:58,520 INFO L410 AbstractCegarLoop]: === Iteration 8 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:39:58,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:58,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1580673573, now seen corresponding path program 1 times [2019-11-15 21:39:58,521 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:58,521 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512748808] [2019-11-15 21:39:58,521 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:58,521 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:58,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:58,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512748808] [2019-11-15 21:39:58,694 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:39:58,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-15 21:39:58,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961661331] [2019-11-15 21:39:58,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 21:39:58,695 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:39:58,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 21:39:58,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:39:58,696 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2019-11-15 21:39:59,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:39:59,012 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2019-11-15 21:39:59,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 21:39:59,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2019-11-15 21:39:59,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:39:59,013 INFO L225 Difference]: With dead ends: 51 [2019-11-15 21:39:59,013 INFO L226 Difference]: Without dead ends: 51 [2019-11-15 21:39:59,014 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-15 21:39:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-15 21:39:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2019-11-15 21:39:59,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-15 21:39:59,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2019-11-15 21:39:59,020 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 19 [2019-11-15 21:39:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:39:59,021 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2019-11-15 21:39:59,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 21:39:59,021 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2019-11-15 21:39:59,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:39:59,022 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:59,022 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:39:59,022 INFO L410 AbstractCegarLoop]: === Iteration 9 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:39:59,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:59,023 INFO L82 PathProgramCache]: Analyzing trace with hash 2127487709, now seen corresponding path program 1 times [2019-11-15 21:39:59,023 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:59,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160973033] [2019-11-15 21:39:59,023 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:59,023 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:59,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:59,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160973033] [2019-11-15 21:39:59,215 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:39:59,215 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-15 21:39:59,216 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309900716] [2019-11-15 21:39:59,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 21:39:59,216 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:39:59,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 21:39:59,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:39:59,217 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 10 states. [2019-11-15 21:39:59,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:39:59,545 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2019-11-15 21:39:59,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 21:39:59,545 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-15 21:39:59,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:39:59,546 INFO L225 Difference]: With dead ends: 64 [2019-11-15 21:39:59,546 INFO L226 Difference]: Without dead ends: 64 [2019-11-15 21:39:59,547 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2019-11-15 21:39:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-15 21:39:59,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2019-11-15 21:39:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-15 21:39:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2019-11-15 21:39:59,553 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 19 [2019-11-15 21:39:59,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:39:59,555 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2019-11-15 21:39:59,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 21:39:59,555 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2019-11-15 21:39:59,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 21:39:59,556 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:59,556 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] [2019-11-15 21:39:59,557 INFO L410 AbstractCegarLoop]: === Iteration 10 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:39:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:59,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1797581199, now seen corresponding path program 1 times [2019-11-15 21:39:59,557 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:59,558 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304060399] [2019-11-15 21:39:59,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:59,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:59,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:59,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304060399] [2019-11-15 21:39:59,648 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:39:59,648 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:39:59,648 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441724449] [2019-11-15 21:39:59,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:39:59,649 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:39:59,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:39:59,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:39:59,649 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 6 states. [2019-11-15 21:39:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:39:59,785 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2019-11-15 21:39:59,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:39:59,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-15 21:39:59,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:39:59,787 INFO L225 Difference]: With dead ends: 61 [2019-11-15 21:39:59,787 INFO L226 Difference]: Without dead ends: 42 [2019-11-15 21:39:59,787 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:39:59,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-15 21:39:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2019-11-15 21:39:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-15 21:39:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2019-11-15 21:39:59,790 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 20 [2019-11-15 21:39:59,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:39:59,791 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2019-11-15 21:39:59,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:39:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2019-11-15 21:39:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 21:39:59,791 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:59,792 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:39:59,792 INFO L410 AbstractCegarLoop]: === Iteration 11 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:39:59,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:59,792 INFO L82 PathProgramCache]: Analyzing trace with hash 956679290, now seen corresponding path program 1 times [2019-11-15 21:39:59,795 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:59,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843223819] [2019-11-15 21:39:59,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:59,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:59,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:59,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843223819] [2019-11-15 21:39:59,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052548349] [2019-11-15 21:39:59,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:00,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-15 21:40:00,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:00,194 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:00,194 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2019-11-15 21:40:00,194 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520894180] [2019-11-15 21:40:00,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 21:40:00,195 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:00,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 21:40:00,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2019-11-15 21:40:00,195 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 16 states. [2019-11-15 21:40:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:00,510 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2019-11-15 21:40:00,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 21:40:00,510 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2019-11-15 21:40:00,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:00,511 INFO L225 Difference]: With dead ends: 41 [2019-11-15 21:40:00,511 INFO L226 Difference]: Without dead ends: 41 [2019-11-15 21:40:00,512 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2019-11-15 21:40:00,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-15 21:40:00,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-11-15 21:40:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-15 21:40:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-11-15 21:40:00,520 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 23 [2019-11-15 21:40:00,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:00,521 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-11-15 21:40:00,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 21:40:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-11-15 21:40:00,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-15 21:40:00,524 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:00,525 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:00,730 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:00,733 INFO L410 AbstractCegarLoop]: === Iteration 12 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:00,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:00,733 INFO L82 PathProgramCache]: Analyzing trace with hash -403117159, now seen corresponding path program 2 times [2019-11-15 21:40:00,733 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:00,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765264998] [2019-11-15 21:40:00,734 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:00,734 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:00,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:01,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765264998] [2019-11-15 21:40:01,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271012785] [2019-11-15 21:40:01,082 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:01,240 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:40:01,240 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:01,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-15 21:40:01,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:01,311 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2019-11-15 21:40:01,311 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:01,320 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:01,321 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:40:01,321 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2019-11-15 21:40:01,566 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:01,566 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2019-11-15 21:40:01,567 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-15 21:40:01,577 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:01,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:40:01,582 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:01,582 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:31 [2019-11-15 21:40:01,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:40:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:01,736 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:01,737 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2019-11-15 21:40:01,737 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335589590] [2019-11-15 21:40:01,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-15 21:40:01,738 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:01,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-15 21:40:01,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2019-11-15 21:40:01,739 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 21 states. [2019-11-15 21:40:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:03,894 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2019-11-15 21:40:03,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-15 21:40:03,897 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 28 [2019-11-15 21:40:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:03,898 INFO L225 Difference]: With dead ends: 91 [2019-11-15 21:40:03,898 INFO L226 Difference]: Without dead ends: 78 [2019-11-15 21:40:03,899 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=231, Invalid=1661, Unknown=0, NotChecked=0, Total=1892 [2019-11-15 21:40:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-15 21:40:03,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2019-11-15 21:40:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-15 21:40:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2019-11-15 21:40:03,903 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 28 [2019-11-15 21:40:03,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:03,903 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2019-11-15 21:40:03,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-15 21:40:03,904 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2019-11-15 21:40:03,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 21:40:03,905 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:03,905 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:04,112 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:04,112 INFO L410 AbstractCegarLoop]: === Iteration 13 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:04,113 INFO L82 PathProgramCache]: Analyzing trace with hash -227169609, now seen corresponding path program 3 times [2019-11-15 21:40:04,113 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:04,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814576848] [2019-11-15 21:40:04,113 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:04,113 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:04,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:04,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814576848] [2019-11-15 21:40:04,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982549647] [2019-11-15 21:40:04,454 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:04,620 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-15 21:40:04,621 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:04,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-15 21:40:04,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:04,797 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2019-11-15 21:40:04,798 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:04,805 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:04,806 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:40:04,807 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2019-11-15 21:40:05,036 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2019-11-15 21:40:05,036 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:05,040 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:05,041 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:05,041 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-15 21:40:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:05,046 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:05,047 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2019-11-15 21:40:05,047 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835412300] [2019-11-15 21:40:05,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-15 21:40:05,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:05,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-15 21:40:05,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2019-11-15 21:40:05,053 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 22 states. [2019-11-15 21:40:06,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:06,144 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2019-11-15 21:40:06,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-15 21:40:06,145 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 37 [2019-11-15 21:40:06,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:06,146 INFO L225 Difference]: With dead ends: 80 [2019-11-15 21:40:06,146 INFO L226 Difference]: Without dead ends: 57 [2019-11-15 21:40:06,147 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2019-11-15 21:40:06,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-15 21:40:06,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2019-11-15 21:40:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-15 21:40:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2019-11-15 21:40:06,152 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 37 [2019-11-15 21:40:06,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:06,162 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2019-11-15 21:40:06,163 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-15 21:40:06,163 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2019-11-15 21:40:06,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-15 21:40:06,164 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:06,167 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:06,372 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:06,372 INFO L410 AbstractCegarLoop]: === Iteration 14 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:06,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:06,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1399570668, now seen corresponding path program 4 times [2019-11-15 21:40:06,372 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:06,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378866755] [2019-11-15 21:40:06,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:06,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:06,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:06,621 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378866755] [2019-11-15 21:40:06,621 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404374016] [2019-11-15 21:40:06,621 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:06,754 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 21:40:06,754 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:06,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 30 conjunts are in the unsatisfiable core [2019-11-15 21:40:06,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:06,945 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:06,945 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2019-11-15 21:40:06,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851866349] [2019-11-15 21:40:06,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-15 21:40:06,946 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:06,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-15 21:40:06,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2019-11-15 21:40:06,947 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 22 states. [2019-11-15 21:40:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:07,655 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2019-11-15 21:40:07,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 21:40:07,655 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2019-11-15 21:40:07,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:07,656 INFO L225 Difference]: With dead ends: 63 [2019-11-15 21:40:07,657 INFO L226 Difference]: Without dead ends: 63 [2019-11-15 21:40:07,657 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2019-11-15 21:40:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-15 21:40:07,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2019-11-15 21:40:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-15 21:40:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2019-11-15 21:40:07,673 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 41 [2019-11-15 21:40:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:07,674 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2019-11-15 21:40:07,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-15 21:40:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2019-11-15 21:40:07,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-15 21:40:07,681 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:07,681 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:07,894 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:07,895 INFO L410 AbstractCegarLoop]: === Iteration 15 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:07,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:07,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1288634049, now seen corresponding path program 5 times [2019-11-15 21:40:07,896 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:07,896 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722670385] [2019-11-15 21:40:07,896 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:07,896 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:07,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:08,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722670385] [2019-11-15 21:40:08,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432868324] [2019-11-15 21:40:08,276 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:08,410 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-11-15 21:40:08,411 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:08,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-15 21:40:08,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:08,565 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2019-11-15 21:40:08,566 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:08,573 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:08,574 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:40:08,574 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2019-11-15 21:40:08,759 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2019-11-15 21:40:08,760 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:08,765 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:08,765 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:08,765 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-15 21:40:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:08,772 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:08,773 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 25 [2019-11-15 21:40:08,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168421567] [2019-11-15 21:40:08,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-15 21:40:08,773 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:08,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-15 21:40:08,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2019-11-15 21:40:08,778 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 25 states. [2019-11-15 21:40:10,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:10,258 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2019-11-15 21:40:10,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-15 21:40:10,259 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2019-11-15 21:40:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:10,260 INFO L225 Difference]: With dead ends: 104 [2019-11-15 21:40:10,260 INFO L226 Difference]: Without dead ends: 68 [2019-11-15 21:40:10,261 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2019-11-15 21:40:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-15 21:40:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2019-11-15 21:40:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-15 21:40:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2019-11-15 21:40:10,266 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 46 [2019-11-15 21:40:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:10,266 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2019-11-15 21:40:10,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-15 21:40:10,266 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2019-11-15 21:40:10,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 21:40:10,267 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:10,268 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:10,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:10,479 INFO L410 AbstractCegarLoop]: === Iteration 16 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:10,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1360591486, now seen corresponding path program 6 times [2019-11-15 21:40:10,481 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:10,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292627303] [2019-11-15 21:40:10,482 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:10,482 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:10,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 17 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:10,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292627303] [2019-11-15 21:40:10,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801200998] [2019-11-15 21:40:10,839 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:11,002 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-11-15 21:40:11,002 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:11,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-15 21:40:11,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:11,015 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 21:40:11,016 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:11,022 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:11,023 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:11,023 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 21:40:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:11,476 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:11,477 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2019-11-15 21:40:11,477 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845849657] [2019-11-15 21:40:11,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-15 21:40:11,478 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:11,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-15 21:40:11,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2019-11-15 21:40:11,479 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 28 states. [2019-11-15 21:40:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:12,471 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2019-11-15 21:40:12,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 21:40:12,472 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 50 [2019-11-15 21:40:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:12,472 INFO L225 Difference]: With dead ends: 74 [2019-11-15 21:40:12,472 INFO L226 Difference]: Without dead ends: 74 [2019-11-15 21:40:12,473 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2019-11-15 21:40:12,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-15 21:40:12,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2019-11-15 21:40:12,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-15 21:40:12,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2019-11-15 21:40:12,478 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 50 [2019-11-15 21:40:12,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:12,478 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2019-11-15 21:40:12,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-15 21:40:12,478 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2019-11-15 21:40:12,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-15 21:40:12,480 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:12,480 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:12,680 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:12,681 INFO L410 AbstractCegarLoop]: === Iteration 17 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:12,681 INFO L82 PathProgramCache]: Analyzing trace with hash -278982767, now seen corresponding path program 7 times [2019-11-15 21:40:12,681 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:12,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593743915] [2019-11-15 21:40:12,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:12,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:12,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:13,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593743915] [2019-11-15 21:40:13,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823649512] [2019-11-15 21:40:13,051 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:13,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-15 21:40:13,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:13,355 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2019-11-15 21:40:13,356 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:13,361 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:13,362 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:40:13,362 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2019-11-15 21:40:13,515 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2019-11-15 21:40:13,516 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:13,517 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:13,517 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:13,518 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-15 21:40:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:13,524 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:13,525 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 28 [2019-11-15 21:40:13,525 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505734151] [2019-11-15 21:40:13,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-15 21:40:13,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:13,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-15 21:40:13,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2019-11-15 21:40:13,527 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 28 states. [2019-11-15 21:40:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:14,737 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2019-11-15 21:40:14,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-15 21:40:14,738 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2019-11-15 21:40:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:14,739 INFO L225 Difference]: With dead ends: 128 [2019-11-15 21:40:14,739 INFO L226 Difference]: Without dead ends: 79 [2019-11-15 21:40:14,740 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2019-11-15 21:40:14,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-15 21:40:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2019-11-15 21:40:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-15 21:40:14,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2019-11-15 21:40:14,744 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 55 [2019-11-15 21:40:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:14,745 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2019-11-15 21:40:14,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-15 21:40:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2019-11-15 21:40:14,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-15 21:40:14,746 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:14,746 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:14,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:14,947 INFO L410 AbstractCegarLoop]: === Iteration 18 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:14,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:14,947 INFO L82 PathProgramCache]: Analyzing trace with hash -714725714, now seen corresponding path program 8 times [2019-11-15 21:40:14,947 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:14,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308158024] [2019-11-15 21:40:14,948 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:14,948 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:14,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:15,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308158024] [2019-11-15 21:40:15,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810109739] [2019-11-15 21:40:15,322 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:15,458 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:40:15,459 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:15,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 44 conjunts are in the unsatisfiable core [2019-11-15 21:40:15,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:15,724 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:15,724 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 26 [2019-11-15 21:40:15,725 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193565169] [2019-11-15 21:40:15,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-15 21:40:15,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:15,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-15 21:40:15,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2019-11-15 21:40:15,726 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 27 states. [2019-11-15 21:40:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:16,506 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2019-11-15 21:40:16,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 21:40:16,506 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 59 [2019-11-15 21:40:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:16,507 INFO L225 Difference]: With dead ends: 85 [2019-11-15 21:40:16,508 INFO L226 Difference]: Without dead ends: 85 [2019-11-15 21:40:16,508 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2019-11-15 21:40:16,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-15 21:40:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2019-11-15 21:40:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-15 21:40:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2019-11-15 21:40:16,513 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 59 [2019-11-15 21:40:16,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:16,513 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2019-11-15 21:40:16,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-15 21:40:16,513 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2019-11-15 21:40:16,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-15 21:40:16,518 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:16,519 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:16,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:16,737 INFO L410 AbstractCegarLoop]: === Iteration 19 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:16,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:16,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1690187291, now seen corresponding path program 9 times [2019-11-15 21:40:16,737 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:16,738 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415330205] [2019-11-15 21:40:16,738 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:16,738 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:16,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:17,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415330205] [2019-11-15 21:40:17,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80528353] [2019-11-15 21:40:17,108 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:17,273 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-11-15 21:40:17,273 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:17,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 53 conjunts are in the unsatisfiable core [2019-11-15 21:40:17,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:17,497 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2019-11-15 21:40:17,498 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:17,504 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:17,504 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:40:17,505 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2019-11-15 21:40:17,677 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2019-11-15 21:40:17,677 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:17,679 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:17,679 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:17,679 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-15 21:40:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:17,688 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:17,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 31 [2019-11-15 21:40:17,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286428239] [2019-11-15 21:40:17,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-15 21:40:17,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:17,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-15 21:40:17,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2019-11-15 21:40:17,691 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 31 states. [2019-11-15 21:40:19,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:19,193 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2019-11-15 21:40:19,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-15 21:40:19,194 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 64 [2019-11-15 21:40:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:19,195 INFO L225 Difference]: With dead ends: 152 [2019-11-15 21:40:19,195 INFO L226 Difference]: Without dead ends: 90 [2019-11-15 21:40:19,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=186, Invalid=2070, Unknown=0, NotChecked=0, Total=2256 [2019-11-15 21:40:19,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-15 21:40:19,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2019-11-15 21:40:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-15 21:40:19,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2019-11-15 21:40:19,199 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 64 [2019-11-15 21:40:19,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:19,199 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2019-11-15 21:40:19,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-15 21:40:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2019-11-15 21:40:19,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-15 21:40:19,200 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:19,201 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:19,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:19,405 INFO L410 AbstractCegarLoop]: === Iteration 20 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:19,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:19,405 INFO L82 PathProgramCache]: Analyzing trace with hash -761896088, now seen corresponding path program 10 times [2019-11-15 21:40:19,406 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:19,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962169763] [2019-11-15 21:40:19,406 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:19,406 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:19,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 47 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:19,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962169763] [2019-11-15 21:40:19,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109382578] [2019-11-15 21:40:19,809 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:20,047 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 21:40:20,047 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:20,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-15 21:40:20,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 45 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:20,320 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:20,320 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 30 [2019-11-15 21:40:20,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951165617] [2019-11-15 21:40:20,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-15 21:40:20,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:20,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-15 21:40:20,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2019-11-15 21:40:20,323 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 31 states. [2019-11-15 21:40:21,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:21,377 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2019-11-15 21:40:21,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-15 21:40:21,378 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 68 [2019-11-15 21:40:21,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:21,379 INFO L225 Difference]: With dead ends: 96 [2019-11-15 21:40:21,379 INFO L226 Difference]: Without dead ends: 96 [2019-11-15 21:40:21,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=1360, Unknown=0, NotChecked=0, Total=1560 [2019-11-15 21:40:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-15 21:40:21,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2019-11-15 21:40:21,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-11-15 21:40:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2019-11-15 21:40:21,383 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 68 [2019-11-15 21:40:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:21,384 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2019-11-15 21:40:21,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-15 21:40:21,384 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2019-11-15 21:40:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-15 21:40:21,385 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:21,385 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:21,590 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:21,590 INFO L410 AbstractCegarLoop]: === Iteration 21 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:21,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:21,590 INFO L82 PathProgramCache]: Analyzing trace with hash -63147669, now seen corresponding path program 11 times [2019-11-15 21:40:21,590 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:21,590 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645679389] [2019-11-15 21:40:21,590 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:21,591 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:21,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 25 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:22,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645679389] [2019-11-15 21:40:22,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453411197] [2019-11-15 21:40:22,090 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:22,234 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-11-15 21:40:22,235 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:22,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 57 conjunts are in the unsatisfiable core [2019-11-15 21:40:22,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:22,476 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2019-11-15 21:40:22,476 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:22,482 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:22,482 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:40:22,483 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2019-11-15 21:40:22,664 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2019-11-15 21:40:22,664 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:22,666 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:22,666 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:22,666 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-15 21:40:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 25 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:22,676 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:22,677 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 34 [2019-11-15 21:40:22,677 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863717300] [2019-11-15 21:40:22,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-15 21:40:22,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:22,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-15 21:40:22,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2019-11-15 21:40:22,678 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand 34 states. [2019-11-15 21:40:24,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:24,419 INFO L93 Difference]: Finished difference Result 176 states and 194 transitions. [2019-11-15 21:40:24,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-11-15 21:40:24,420 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 73 [2019-11-15 21:40:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:24,420 INFO L225 Difference]: With dead ends: 176 [2019-11-15 21:40:24,421 INFO L226 Difference]: Without dead ends: 101 [2019-11-15 21:40:24,422 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=205, Invalid=2551, Unknown=0, NotChecked=0, Total=2756 [2019-11-15 21:40:24,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-15 21:40:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2019-11-15 21:40:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-15 21:40:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2019-11-15 21:40:24,425 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 73 [2019-11-15 21:40:24,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:24,426 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2019-11-15 21:40:24,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-15 21:40:24,426 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2019-11-15 21:40:24,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-15 21:40:24,427 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:24,427 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:24,628 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:24,628 INFO L410 AbstractCegarLoop]: === Iteration 22 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:24,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1449600184, now seen corresponding path program 12 times [2019-11-15 21:40:24,629 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:24,629 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28981959] [2019-11-15 21:40:24,629 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:24,630 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:24,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 68 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:25,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28981959] [2019-11-15 21:40:25,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013985459] [2019-11-15 21:40:25,046 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/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 [2019-11-15 21:40:25,191 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-11-15 21:40:25,191 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:25,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 46 conjunts are in the unsatisfiable core [2019-11-15 21:40:25,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:25,199 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 21:40:25,199 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:25,203 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:25,204 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:25,204 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 21:40:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 66 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:25,720 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:25,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 39 [2019-11-15 21:40:25,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299598653] [2019-11-15 21:40:25,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-15 21:40:25,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:25,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-15 21:40:25,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560 [2019-11-15 21:40:25,722 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand 40 states. [2019-11-15 21:40:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:26,778 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2019-11-15 21:40:26,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-15 21:40:26,783 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 77 [2019-11-15 21:40:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:26,784 INFO L225 Difference]: With dead ends: 107 [2019-11-15 21:40:26,784 INFO L226 Difference]: Without dead ends: 107 [2019-11-15 21:40:26,785 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=312, Invalid=2138, Unknown=0, NotChecked=0, Total=2450 [2019-11-15 21:40:26,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-15 21:40:26,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2019-11-15 21:40:26,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-15 21:40:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2019-11-15 21:40:26,789 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 77 [2019-11-15 21:40:26,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:26,789 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2019-11-15 21:40:26,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-15 21:40:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2019-11-15 21:40:26,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-11-15 21:40:26,789 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:26,789 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:26,990 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:26,990 INFO L410 AbstractCegarLoop]: === Iteration 23 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:26,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:26,990 INFO L82 PathProgramCache]: Analyzing trace with hash -982915701, now seen corresponding path program 13 times [2019-11-15 21:40:26,990 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:26,990 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138663119] [2019-11-15 21:40:26,991 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:26,991 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:26,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 29 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:27,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138663119] [2019-11-15 21:40:27,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886567457] [2019-11-15 21:40:27,410 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:27,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 63 conjunts are in the unsatisfiable core [2019-11-15 21:40:27,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:27,792 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2019-11-15 21:40:27,792 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:27,801 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:27,802 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:40:27,802 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2019-11-15 21:40:27,994 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2019-11-15 21:40:27,994 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:27,997 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:27,997 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:27,997 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-15 21:40:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 29 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:28,012 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:28,012 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 37 [2019-11-15 21:40:28,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568062786] [2019-11-15 21:40:28,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-11-15 21:40:28,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:28,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-11-15 21:40:28,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1245, Unknown=0, NotChecked=0, Total=1332 [2019-11-15 21:40:28,016 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand 37 states. [2019-11-15 21:40:30,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:30,019 INFO L93 Difference]: Finished difference Result 200 states and 221 transitions. [2019-11-15 21:40:30,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-15 21:40:30,020 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 82 [2019-11-15 21:40:30,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:30,020 INFO L225 Difference]: With dead ends: 200 [2019-11-15 21:40:30,020 INFO L226 Difference]: Without dead ends: 112 [2019-11-15 21:40:30,021 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=224, Invalid=3082, Unknown=0, NotChecked=0, Total=3306 [2019-11-15 21:40:30,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-15 21:40:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2019-11-15 21:40:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-15 21:40:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2019-11-15 21:40:30,024 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 82 [2019-11-15 21:40:30,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:30,025 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2019-11-15 21:40:30,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-11-15 21:40:30,025 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2019-11-15 21:40:30,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-15 21:40:30,026 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:30,026 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:30,229 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:30,229 INFO L410 AbstractCegarLoop]: === Iteration 24 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:30,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1650082894, now seen corresponding path program 14 times [2019-11-15 21:40:30,230 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:30,230 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371716354] [2019-11-15 21:40:30,230 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:30,230 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:30,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 93 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:30,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371716354] [2019-11-15 21:40:30,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837351249] [2019-11-15 21:40:30,638 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:30,796 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:40:30,796 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:30,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 57 conjunts are in the unsatisfiable core [2019-11-15 21:40:30,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 91 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:31,106 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:31,106 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 35 [2019-11-15 21:40:31,106 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489984797] [2019-11-15 21:40:31,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-15 21:40:31,107 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:31,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-15 21:40:31,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2019-11-15 21:40:31,108 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand 36 states. [2019-11-15 21:40:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:32,337 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2019-11-15 21:40:32,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-15 21:40:32,337 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 86 [2019-11-15 21:40:32,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:32,338 INFO L225 Difference]: With dead ends: 118 [2019-11-15 21:40:32,338 INFO L226 Difference]: Without dead ends: 118 [2019-11-15 21:40:32,339 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=268, Invalid=1894, Unknown=0, NotChecked=0, Total=2162 [2019-11-15 21:40:32,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-11-15 21:40:32,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2019-11-15 21:40:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-11-15 21:40:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2019-11-15 21:40:32,342 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 86 [2019-11-15 21:40:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:32,342 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2019-11-15 21:40:32,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-15 21:40:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2019-11-15 21:40:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-15 21:40:32,343 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:32,343 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:32,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:32,544 INFO L410 AbstractCegarLoop]: === Iteration 25 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:32,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1805701051, now seen corresponding path program 15 times [2019-11-15 21:40:32,544 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:32,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956971636] [2019-11-15 21:40:32,544 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:32,544 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:32,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 33 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:33,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956971636] [2019-11-15 21:40:33,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273941437] [2019-11-15 21:40:33,259 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:33,445 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-15 21:40:33,445 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:33,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 69 conjunts are in the unsatisfiable core [2019-11-15 21:40:33,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:33,778 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2019-11-15 21:40:33,778 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:33,783 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:33,784 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:40:33,784 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2019-11-15 21:40:33,946 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2019-11-15 21:40:33,947 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:33,948 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:33,949 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:33,949 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-15 21:40:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 33 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:33,961 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:33,961 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 40 [2019-11-15 21:40:33,961 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117288778] [2019-11-15 21:40:33,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-15 21:40:33,962 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:33,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-15 21:40:33,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1466, Unknown=0, NotChecked=0, Total=1560 [2019-11-15 21:40:33,963 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand 40 states. [2019-11-15 21:40:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:36,513 INFO L93 Difference]: Finished difference Result 224 states and 248 transitions. [2019-11-15 21:40:36,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-15 21:40:36,514 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 91 [2019-11-15 21:40:36,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:36,515 INFO L225 Difference]: With dead ends: 224 [2019-11-15 21:40:36,515 INFO L226 Difference]: Without dead ends: 123 [2019-11-15 21:40:36,516 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=243, Invalid=3663, Unknown=0, NotChecked=0, Total=3906 [2019-11-15 21:40:36,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-11-15 21:40:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2019-11-15 21:40:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-11-15 21:40:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2019-11-15 21:40:36,518 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 91 [2019-11-15 21:40:36,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:36,519 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2019-11-15 21:40:36,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-15 21:40:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2019-11-15 21:40:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-15 21:40:36,520 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:36,520 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:36,720 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:36,721 INFO L410 AbstractCegarLoop]: === Iteration 26 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:36,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1863729950, now seen corresponding path program 16 times [2019-11-15 21:40:36,721 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:36,721 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949778429] [2019-11-15 21:40:36,721 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:36,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:36,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:37,289 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 122 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:37,289 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949778429] [2019-11-15 21:40:37,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001510858] [2019-11-15 21:40:37,290 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:37,515 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 21:40:37,515 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:37,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 60 conjunts are in the unsatisfiable core [2019-11-15 21:40:37,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 120 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:37,839 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:37,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 39 [2019-11-15 21:40:37,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584431243] [2019-11-15 21:40:37,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-15 21:40:37,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:37,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-15 21:40:37,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1348, Unknown=0, NotChecked=0, Total=1560 [2019-11-15 21:40:37,841 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand 40 states. [2019-11-15 21:40:39,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:39,133 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2019-11-15 21:40:39,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-15 21:40:39,133 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 95 [2019-11-15 21:40:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:39,134 INFO L225 Difference]: With dead ends: 129 [2019-11-15 21:40:39,134 INFO L226 Difference]: Without dead ends: 129 [2019-11-15 21:40:39,135 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=314, Invalid=2338, Unknown=0, NotChecked=0, Total=2652 [2019-11-15 21:40:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-11-15 21:40:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2019-11-15 21:40:39,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-15 21:40:39,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2019-11-15 21:40:39,138 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 95 [2019-11-15 21:40:39,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:39,139 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 139 transitions. [2019-11-15 21:40:39,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-15 21:40:39,139 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 139 transitions. [2019-11-15 21:40:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-15 21:40:39,140 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:39,140 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:39,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:39,345 INFO L410 AbstractCegarLoop]: === Iteration 27 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:39,346 INFO L82 PathProgramCache]: Analyzing trace with hash -381160399, now seen corresponding path program 17 times [2019-11-15 21:40:39,346 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:39,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258468875] [2019-11-15 21:40:39,346 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:39,346 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:39,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 37 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:40,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258468875] [2019-11-15 21:40:40,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073670573] [2019-11-15 21:40:40,014 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:40,186 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-11-15 21:40:40,187 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:40,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 75 conjunts are in the unsatisfiable core [2019-11-15 21:40:40,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:40,554 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2019-11-15 21:40:40,554 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:40,559 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:40,560 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:40:40,560 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2019-11-15 21:40:40,744 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2019-11-15 21:40:40,744 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:40,745 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:40,745 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:40,746 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-15 21:40:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 37 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:40,760 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:40,760 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 43 [2019-11-15 21:40:40,760 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143549034] [2019-11-15 21:40:40,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-11-15 21:40:40,761 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:40,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-11-15 21:40:40,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1705, Unknown=0, NotChecked=0, Total=1806 [2019-11-15 21:40:40,762 INFO L87 Difference]: Start difference. First operand 127 states and 139 transitions. Second operand 43 states. [2019-11-15 21:40:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:43,213 INFO L93 Difference]: Finished difference Result 248 states and 275 transitions. [2019-11-15 21:40:43,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-15 21:40:43,213 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 100 [2019-11-15 21:40:43,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:43,214 INFO L225 Difference]: With dead ends: 248 [2019-11-15 21:40:43,214 INFO L226 Difference]: Without dead ends: 134 [2019-11-15 21:40:43,216 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=262, Invalid=4294, Unknown=0, NotChecked=0, Total=4556 [2019-11-15 21:40:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-11-15 21:40:43,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2019-11-15 21:40:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-15 21:40:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 143 transitions. [2019-11-15 21:40:43,219 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 143 transitions. Word has length 100 [2019-11-15 21:40:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:43,219 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 143 transitions. [2019-11-15 21:40:43,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-11-15 21:40:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 143 transitions. [2019-11-15 21:40:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-15 21:40:43,220 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:43,220 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:43,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:43,424 INFO L410 AbstractCegarLoop]: === Iteration 28 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:43,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:43,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1659193396, now seen corresponding path program 18 times [2019-11-15 21:40:43,424 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:43,424 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892481444] [2019-11-15 21:40:43,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:43,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:43,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 155 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:43,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892481444] [2019-11-15 21:40:43,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481201433] [2019-11-15 21:40:43,952 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:44,262 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-11-15 21:40:44,262 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:44,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 60 conjunts are in the unsatisfiable core [2019-11-15 21:40:44,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:44,273 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 21:40:44,273 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:44,281 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:44,281 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:44,281 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 21:40:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 153 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:44,711 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:44,711 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 40 [2019-11-15 21:40:44,712 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196441345] [2019-11-15 21:40:44,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-11-15 21:40:44,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:44,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-11-15 21:40:44,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1446, Unknown=0, NotChecked=0, Total=1640 [2019-11-15 21:40:44,713 INFO L87 Difference]: Start difference. First operand 131 states and 143 transitions. Second operand 41 states. [2019-11-15 21:40:46,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:46,307 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2019-11-15 21:40:46,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-15 21:40:46,308 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 104 [2019-11-15 21:40:46,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:46,309 INFO L225 Difference]: With dead ends: 140 [2019-11-15 21:40:46,309 INFO L226 Difference]: Without dead ends: 140 [2019-11-15 21:40:46,310 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=366, Invalid=2496, Unknown=0, NotChecked=0, Total=2862 [2019-11-15 21:40:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-11-15 21:40:46,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2019-11-15 21:40:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-15 21:40:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2019-11-15 21:40:46,314 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 104 [2019-11-15 21:40:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:46,314 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2019-11-15 21:40:46,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-11-15 21:40:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2019-11-15 21:40:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-15 21:40:46,315 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:46,315 INFO L380 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:46,515 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:46,516 INFO L410 AbstractCegarLoop]: === Iteration 29 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:46,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:46,516 INFO L82 PathProgramCache]: Analyzing trace with hash -642208737, now seen corresponding path program 19 times [2019-11-15 21:40:46,516 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:46,516 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090758993] [2019-11-15 21:40:46,516 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:46,516 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:46,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 41 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:47,257 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090758993] [2019-11-15 21:40:47,257 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870131763] [2019-11-15 21:40:47,257 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:47,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 81 conjunts are in the unsatisfiable core [2019-11-15 21:40:47,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:47,842 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2019-11-15 21:40:47,842 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:47,848 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:47,848 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:40:47,848 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2019-11-15 21:40:48,130 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2019-11-15 21:40:48,131 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:48,132 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:48,132 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:48,133 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-15 21:40:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 41 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:48,154 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:48,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 46 [2019-11-15 21:40:48,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59796966] [2019-11-15 21:40:48,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-11-15 21:40:48,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:48,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-11-15 21:40:48,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1962, Unknown=0, NotChecked=0, Total=2070 [2019-11-15 21:40:48,156 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand 46 states. [2019-11-15 21:40:50,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:50,951 INFO L93 Difference]: Finished difference Result 272 states and 302 transitions. [2019-11-15 21:40:50,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-11-15 21:40:50,951 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 109 [2019-11-15 21:40:50,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:50,952 INFO L225 Difference]: With dead ends: 272 [2019-11-15 21:40:50,952 INFO L226 Difference]: Without dead ends: 145 [2019-11-15 21:40:50,954 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=281, Invalid=4975, Unknown=0, NotChecked=0, Total=5256 [2019-11-15 21:40:50,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-11-15 21:40:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2019-11-15 21:40:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-11-15 21:40:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 155 transitions. [2019-11-15 21:40:50,956 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 155 transitions. Word has length 109 [2019-11-15 21:40:50,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:50,956 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 155 transitions. [2019-11-15 21:40:50,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-11-15 21:40:50,957 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 155 transitions. [2019-11-15 21:40:50,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-15 21:40:50,957 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:50,957 INFO L380 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:51,157 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:51,158 INFO L410 AbstractCegarLoop]: === Iteration 30 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:51,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:51,158 INFO L82 PathProgramCache]: Analyzing trace with hash -692704388, now seen corresponding path program 20 times [2019-11-15 21:40:51,158 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:51,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502337776] [2019-11-15 21:40:51,158 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:51,158 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:51,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 192 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:51,682 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502337776] [2019-11-15 21:40:51,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716409436] [2019-11-15 21:40:51,683 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:51,840 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:40:51,840 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:51,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 72 conjunts are in the unsatisfiable core [2019-11-15 21:40:51,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 190 proven. 327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:52,267 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:52,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27] total 44 [2019-11-15 21:40:52,268 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705437927] [2019-11-15 21:40:52,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-11-15 21:40:52,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:52,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-11-15 21:40:52,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1699, Unknown=0, NotChecked=0, Total=1980 [2019-11-15 21:40:52,269 INFO L87 Difference]: Start difference. First operand 142 states and 155 transitions. Second operand 45 states. [2019-11-15 21:40:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:53,977 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2019-11-15 21:40:53,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-15 21:40:53,978 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 113 [2019-11-15 21:40:53,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:53,979 INFO L225 Difference]: With dead ends: 151 [2019-11-15 21:40:53,979 INFO L226 Difference]: Without dead ends: 151 [2019-11-15 21:40:53,979 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=400, Invalid=3022, Unknown=0, NotChecked=0, Total=3422 [2019-11-15 21:40:53,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-15 21:40:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2019-11-15 21:40:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-11-15 21:40:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2019-11-15 21:40:53,982 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 113 [2019-11-15 21:40:53,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:53,982 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2019-11-15 21:40:53,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 45 states. [2019-11-15 21:40:53,983 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2019-11-15 21:40:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-15 21:40:53,983 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:53,983 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:54,183 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:54,184 INFO L410 AbstractCegarLoop]: === Iteration 31 === [cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-11-15 21:40:54,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:54,184 INFO L82 PathProgramCache]: Analyzing trace with hash 517641687, now seen corresponding path program 21 times [2019-11-15 21:40:54,184 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:54,184 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505284856] [2019-11-15 21:40:54,184 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:54,184 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:54,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 45 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:55,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505284856] [2019-11-15 21:40:55,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045287629] [2019-11-15 21:40:55,185 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:55,536 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2019-11-15 21:40:55,537 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:55,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-15 21:40:55,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:55,546 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 21:40:55,547 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:55,551 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:55,551 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:40:55,551 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-15 21:40:55,611 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-11-15 21:40:55,611 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:40:55,617 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:55,618 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:40:55,618 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2019-11-15 21:40:55,907 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:55,908 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2019-11-15 21:40:55,908 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-15 21:40:55,920 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:40:55,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:40:55,921 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-15 21:40:55,921 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:16 [2019-11-15 21:40:55,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-15 21:40:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2019-11-15 21:40:56,131 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:40:56,131 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 9] total 40 [2019-11-15 21:40:56,131 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246023143] [2019-11-15 21:40:56,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-15 21:40:56,132 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:56,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-15 21:40:56,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1478, Unknown=0, NotChecked=0, Total=1560 [2019-11-15 21:40:56,132 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 40 states. [2019-11-15 21:41:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:41:04,593 INFO L93 Difference]: Finished difference Result 293 states and 326 transitions. [2019-11-15 21:41:04,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2019-11-15 21:41:04,593 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 118 [2019-11-15 21:41:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:41:04,594 INFO L225 Difference]: With dead ends: 293 [2019-11-15 21:41:04,594 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 21:41:04,595 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3859 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1323, Invalid=15707, Unknown=0, NotChecked=0, Total=17030 [2019-11-15 21:41:04,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 21:41:04,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 21:41:04,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 21:41:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 21:41:04,596 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 118 [2019-11-15 21:41:04,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:41:04,596 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:41:04,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-15 21:41:04,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 21:41:04,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 21:41:04,797 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:41:04,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:41:04 BoogieIcfgContainer [2019-11-15 21:41:04,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:41:04,803 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:41:04,803 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:41:04,803 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:41:04,804 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:39:55" (3/4) ... [2019-11-15 21:41:04,808 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 21:41:04,814 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-15 21:41:04,815 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrreplace [2019-11-15 21:41:04,815 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-15 21:41:04,815 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-15 21:41:04,815 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-15 21:41:04,817 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-15 21:41:04,818 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-15 21:41:04,818 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-15 21:41:04,827 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2019-11-15 21:41:04,828 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-15 21:41:04,828 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 21:41:04,867 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_73ad06fb-1eb0-4779-9893-b7674de1dde3/bin/uautomizer/witness.graphml [2019-11-15 21:41:04,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:41:04,869 INFO L168 Benchmark]: Toolchain (without parser) took 71123.55 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 690.5 MB). Free memory was 939.4 MB in the beginning and 1.4 GB in the end (delta: -454.1 MB). Peak memory consumption was 236.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:04,869 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:41:04,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -166.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:04,870 INFO L168 Benchmark]: Boogie Preprocessor took 82.15 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:04,871 INFO L168 Benchmark]: RCFGBuilder took 895.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:04,871 INFO L168 Benchmark]: TraceAbstraction took 69444.79 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 559.9 MB). Free memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: -350.2 MB). Peak memory consumption was 209.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:04,871 INFO L168 Benchmark]: Witness Printer took 64.72 ms. Allocated memory is still 1.7 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:04,873 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 629.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -166.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.15 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 895.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 69444.79 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 559.9 MB). Free memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: -350.2 MB). Peak memory consumption was 209.7 MB. Max. memory is 11.5 GB. * Witness Printer took 64.72 ms. Allocated memory is still 1.7 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 57 locations, 11 error locations. Result: SAFE, OverallTime: 69.3s, OverallIterations: 31, TraceHistogramMax: 12, AutomataDifference: 40.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1141 SDtfs, 4268 SDslu, 5312 SDs, 0 SdLazy, 37910 SolverSat, 735 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 21.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2457 GetRequests, 1334 SyntacticMatches, 25 SemanticMatches, 1098 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11605 ImplicationChecksByTransitivity, 31.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 31 MinimizatonAttempts, 132 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 18.8s InterpolantComputationTime, 3192 NumberOfCodeBlocks, 3192 NumberOfCodeBlocksAsserted, 132 NumberOfCheckSat, 3139 ConstructedInterpolants, 140 QuantifiedInterpolants, 2292487 SizeOfPredicates, 185 NumberOfNonLiveVariables, 5730 ConjunctsInSsa, 1073 ConjunctsInUnsatCore, 53 InterpolantComputations, 9 PerfectInterpolantSequences, 2468/9110 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...