./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 0.1.25-f470102 [2019-12-07 13:54:21,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:54:21,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:54:21,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:54:21,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:54:21,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:54:21,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:54:21,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:54:21,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:54:21,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:54:21,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:54:21,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:54:21,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:54:21,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:54:21,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:54:21,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:54:21,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:54:21,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:54:21,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:54:21,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:54:21,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:54:21,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:54:21,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:54:21,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:54:21,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:54:21,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:54:21,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:54:21,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:54:21,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:54:21,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:54:21,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:54:21,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:54:21,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:54:21,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:54:21,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:54:21,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:54:21,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:54:21,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:54:21,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:54:21,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:54:21,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:54:21,708 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 13:54:21,718 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:54:21,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:54:21,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:54:21,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:54:21,719 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:54:21,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:54:21,720 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:54:21,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 13:54:21,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:54:21,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:54:21,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:54:21,720 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 13:54:21,720 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 13:54:21,721 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 13:54:21,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:54:21,721 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 13:54:21,721 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:54:21,721 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:54:21,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:54:21,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:54:21,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:54:21,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:54:21,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:54:21,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:54:21,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:54:21,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:54:21,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:54:21,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:54:21,723 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_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:54:21,833 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:54:21,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:54:21,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:54:21,847 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:54:21,848 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:54:21,848 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2019-12-07 13:54:21,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/bin/uautomizer/data/f878b9ab6/a9f4d8c2b67e4f5fbffc4955b33d8011/FLAG2cb0cc5ec [2019-12-07 13:54:22,320 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:54:22,320 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2019-12-07 13:54:22,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/bin/uautomizer/data/f878b9ab6/a9f4d8c2b67e4f5fbffc4955b33d8011/FLAG2cb0cc5ec [2019-12-07 13:54:22,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/bin/uautomizer/data/f878b9ab6/a9f4d8c2b67e4f5fbffc4955b33d8011 [2019-12-07 13:54:22,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:54:22,680 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 13:54:22,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:54:22,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:54:22,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:54:22,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:54:22" (1/1) ... [2019-12-07 13:54:22,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a05b285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:22, skipping insertion in model container [2019-12-07 13:54:22,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:54:22" (1/1) ... [2019-12-07 13:54:22,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:54:22,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:54:22,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:54:22,916 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:54:22,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:54:22,974 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:54:22,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:22 WrapperNode [2019-12-07 13:54:22,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:54:22,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:54:22,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:54:22,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:54:22,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:22" (1/1) ... [2019-12-07 13:54:22,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:22" (1/1) ... [2019-12-07 13:54:22,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:22" (1/1) ... [2019-12-07 13:54:22,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:22" (1/1) ... [2019-12-07 13:54:23,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:22" (1/1) ... [2019-12-07 13:54:23,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:22" (1/1) ... [2019-12-07 13:54:23,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:22" (1/1) ... [2019-12-07 13:54:23,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:54:23,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:54:23,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:54:23,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:54:23,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:54:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 13:54:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:54:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-07 13:54:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-07 13:54:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-07 13:54:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-07 13:54:23,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-07 13:54:23,052 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrreplace [2019-12-07 13:54:23,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 13:54:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-07 13:54:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-07 13:54:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-07 13:54:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-07 13:54:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-07 13:54:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-07 13:54:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-07 13:54:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-07 13:54:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-07 13:54:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-07 13:54:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 13:54:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-07 13:54:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-07 13:54:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-07 13:54:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure cstrreplace [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 13:54:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:54:23,312 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:54:23,313 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 13:54:23,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:54:23 BoogieIcfgContainer [2019-12-07 13:54:23,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:54:23,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:54:23,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:54:23,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:54:23,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:54:22" (1/3) ... [2019-12-07 13:54:23,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9cd1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:54:23, skipping insertion in model container [2019-12-07 13:54:23,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:22" (2/3) ... [2019-12-07 13:54:23,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9cd1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:54:23, skipping insertion in model container [2019-12-07 13:54:23,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:54:23" (3/3) ... [2019-12-07 13:54:23,318 INFO L109 eAbstractionObserver]: Analyzing ICFG strreplace-alloca-2.i [2019-12-07 13:54:23,324 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:54:23,329 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-12-07 13:54:23,336 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-12-07 13:54:23,348 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:54:23,348 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 13:54:23,349 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:54:23,349 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:54:23,349 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:54:23,349 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:54:23,349 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:54:23,349 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:54:23,359 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-12-07 13:54:23,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:54:23,366 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:23,366 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:23,366 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:23,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:23,370 INFO L82 PathProgramCache]: Analyzing trace with hash -610270170, now seen corresponding path program 1 times [2019-12-07 13:54:23,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:23,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976808447] [2019-12-07 13:54:23,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:23,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976808447] [2019-12-07 13:54:23,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:23,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:54:23,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028238455] [2019-12-07 13:54:23,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:54:23,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:23,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:54:23,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:54:23,513 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2019-12-07 13:54:23,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:23,597 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2019-12-07 13:54:23,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:54:23,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 13:54:23,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:23,606 INFO L225 Difference]: With dead ends: 40 [2019-12-07 13:54:23,607 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 13:54:23,608 INFO L630 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 [2019-12-07 13:54:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 13:54:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-12-07 13:54:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 13:54:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2019-12-07 13:54:23,636 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 10 [2019-12-07 13:54:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:23,637 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2019-12-07 13:54:23,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:54:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2019-12-07 13:54:23,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:54:23,637 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:23,637 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:23,638 INFO L410 AbstractCegarLoop]: === Iteration 2 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:23,638 INFO L82 PathProgramCache]: Analyzing trace with hash -610270169, now seen corresponding path program 1 times [2019-12-07 13:54:23,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:23,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049855279] [2019-12-07 13:54:23,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:23,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049855279] [2019-12-07 13:54:23,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:23,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:54:23,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286657909] [2019-12-07 13:54:23,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:54:23,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:23,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:54:23,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:54:23,700 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2019-12-07 13:54:23,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:23,761 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2019-12-07 13:54:23,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:54:23,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-07 13:54:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:23,763 INFO L225 Difference]: With dead ends: 36 [2019-12-07 13:54:23,763 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 13:54:23,764 INFO L630 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 [2019-12-07 13:54:23,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 13:54:23,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 13:54:23,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 13:54:23,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2019-12-07 13:54:23,769 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 10 [2019-12-07 13:54:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:23,769 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2019-12-07 13:54:23,769 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:54:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2019-12-07 13:54:23,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:54:23,770 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:23,770 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:23,770 INFO L410 AbstractCegarLoop]: === Iteration 3 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:23,770 INFO L82 PathProgramCache]: Analyzing trace with hash -610270116, now seen corresponding path program 1 times [2019-12-07 13:54:23,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:23,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411531783] [2019-12-07 13:54:23,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:23,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411531783] [2019-12-07 13:54:23,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:23,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 13:54:23,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033217560] [2019-12-07 13:54:23,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:54:23,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:23,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:54:23,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:54:23,818 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 5 states. [2019-12-07 13:54:23,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:23,882 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2019-12-07 13:54:23,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:54:23,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-07 13:54:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:23,885 INFO L225 Difference]: With dead ends: 44 [2019-12-07 13:54:23,885 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 13:54:23,885 INFO L630 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 [2019-12-07 13:54:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 13:54:23,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2019-12-07 13:54:23,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-12-07 13:54:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2019-12-07 13:54:23,893 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 10 [2019-12-07 13:54:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:23,894 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-12-07 13:54:23,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:54:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2019-12-07 13:54:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:54:23,894 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:23,894 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:23,895 INFO L410 AbstractCegarLoop]: === Iteration 4 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:23,895 INFO L82 PathProgramCache]: Analyzing trace with hash -610210534, now seen corresponding path program 1 times [2019-12-07 13:54:23,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:23,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934032936] [2019-12-07 13:54:23,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:23,945 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934032936] [2019-12-07 13:54:23,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:23,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:54:23,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103327524] [2019-12-07 13:54:23,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:54:23,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:23,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:54:23,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:54:23,946 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 5 states. [2019-12-07 13:54:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:24,019 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2019-12-07 13:54:24,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:54:24,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-07 13:54:24,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:24,020 INFO L225 Difference]: With dead ends: 48 [2019-12-07 13:54:24,020 INFO L226 Difference]: Without dead ends: 48 [2019-12-07 13:54:24,020 INFO L630 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 [2019-12-07 13:54:24,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-12-07 13:54:24,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2019-12-07 13:54:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 13:54:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-12-07 13:54:24,024 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 10 [2019-12-07 13:54:24,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:24,024 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-12-07 13:54:24,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:54:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-12-07 13:54:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:54:24,025 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:24,025 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:24,025 INFO L410 AbstractCegarLoop]: === Iteration 5 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:24,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:24,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041719, now seen corresponding path program 1 times [2019-12-07 13:54:24,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:24,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950382298] [2019-12-07 13:54:24,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:24,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950382298] [2019-12-07 13:54:24,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:24,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 13:54:24,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764580095] [2019-12-07 13:54:24,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:54:24,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:24,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:54:24,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:54:24,070 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2019-12-07 13:54:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:24,146 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2019-12-07 13:54:24,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:54:24,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-12-07 13:54:24,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:24,147 INFO L225 Difference]: With dead ends: 37 [2019-12-07 13:54:24,147 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 13:54:24,148 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:54:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 13:54:24,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-12-07 13:54:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 13:54:24,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-12-07 13:54:24,152 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 14 [2019-12-07 13:54:24,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:24,152 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-12-07 13:54:24,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:54:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-12-07 13:54:24,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:54:24,153 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:24,153 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:24,154 INFO L410 AbstractCegarLoop]: === Iteration 6 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:24,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:24,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041720, now seen corresponding path program 1 times [2019-12-07 13:54:24,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:24,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524107528] [2019-12-07 13:54:24,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:24,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524107528] [2019-12-07 13:54:24,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:24,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 13:54:24,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634219543] [2019-12-07 13:54:24,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 13:54:24,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:24,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 13:54:24,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:54:24,232 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 8 states. [2019-12-07 13:54:24,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:24,353 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2019-12-07 13:54:24,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:54:24,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-12-07 13:54:24,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:24,355 INFO L225 Difference]: With dead ends: 47 [2019-12-07 13:54:24,356 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 13:54:24,356 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-12-07 13:54:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 13:54:24,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2019-12-07 13:54:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 13:54:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-12-07 13:54:24,359 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 14 [2019-12-07 13:54:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:24,360 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-12-07 13:54:24,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 13:54:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-12-07 13:54:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:54:24,360 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:24,360 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:24,361 INFO L410 AbstractCegarLoop]: === Iteration 7 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:24,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:24,361 INFO L82 PathProgramCache]: Analyzing trace with hash 415323869, now seen corresponding path program 1 times [2019-12-07 13:54:24,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:24,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006661018] [2019-12-07 13:54:24,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:24,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006661018] [2019-12-07 13:54:24,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078921627] [2019-12-07 13:54:24,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:54:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:24,481 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 13:54:24,485 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:54:24,523 INFO L377 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 [2019-12-07 13:54:24,523 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:54:24,528 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:24,529 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:54:24,529 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-12-07 13:54:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:24,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:54:24,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2019-12-07 13:54:24,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393126791] [2019-12-07 13:54:24,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 13:54:24,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:24,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 13:54:24,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-07 13:54:24,541 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2019-12-07 13:54:24,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:24,616 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2019-12-07 13:54:24,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:54:24,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-12-07 13:54:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:24,617 INFO L225 Difference]: With dead ends: 49 [2019-12-07 13:54:24,617 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 13:54:24,618 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:54:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 13:54:24,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2019-12-07 13:54:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 13:54:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-12-07 13:54:24,621 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 14 [2019-12-07 13:54:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:24,621 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-12-07 13:54:24,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 13:54:24,621 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-12-07 13:54:24,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 13:54:24,621 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:24,621 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:24,822 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:54:24,822 INFO L410 AbstractCegarLoop]: === Iteration 8 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1580673573, now seen corresponding path program 1 times [2019-12-07 13:54:24,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:24,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131916174] [2019-12-07 13:54:24,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:25,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131916174] [2019-12-07 13:54:25,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:25,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-12-07 13:54:25,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93254010] [2019-12-07 13:54:25,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 13:54:25,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:25,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 13:54:25,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-12-07 13:54:25,010 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2019-12-07 13:54:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:25,290 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2019-12-07 13:54:25,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 13:54:25,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2019-12-07 13:54:25,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:25,291 INFO L225 Difference]: With dead ends: 51 [2019-12-07 13:54:25,291 INFO L226 Difference]: Without dead ends: 51 [2019-12-07 13:54:25,291 INFO L630 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 [2019-12-07 13:54:25,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-12-07 13:54:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2019-12-07 13:54:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-12-07 13:54:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2019-12-07 13:54:25,295 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 19 [2019-12-07 13:54:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:25,295 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2019-12-07 13:54:25,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 13:54:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2019-12-07 13:54:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 13:54:25,296 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:25,296 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:25,296 INFO L410 AbstractCegarLoop]: === Iteration 9 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:25,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:25,296 INFO L82 PathProgramCache]: Analyzing trace with hash 2127487709, now seen corresponding path program 1 times [2019-12-07 13:54:25,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:25,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870917010] [2019-12-07 13:54:25,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:25,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870917010] [2019-12-07 13:54:25,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:25,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-12-07 13:54:25,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118339159] [2019-12-07 13:54:25,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 13:54:25,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:25,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 13:54:25,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-12-07 13:54:25,393 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 10 states. [2019-12-07 13:54:25,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:25,526 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2019-12-07 13:54:25,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 13:54:25,526 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-12-07 13:54:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:25,526 INFO L225 Difference]: With dead ends: 64 [2019-12-07 13:54:25,526 INFO L226 Difference]: Without dead ends: 64 [2019-12-07 13:54:25,527 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2019-12-07 13:54:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-07 13:54:25,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2019-12-07 13:54:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-12-07 13:54:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2019-12-07 13:54:25,530 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 19 [2019-12-07 13:54:25,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:25,530 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2019-12-07 13:54:25,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 13:54:25,530 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2019-12-07 13:54:25,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 13:54:25,531 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:25,531 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:25,531 INFO L410 AbstractCegarLoop]: === Iteration 10 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:25,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:25,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1797581199, now seen corresponding path program 1 times [2019-12-07 13:54:25,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:25,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476405573] [2019-12-07 13:54:25,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:25,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476405573] [2019-12-07 13:54:25,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:25,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 13:54:25,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992845122] [2019-12-07 13:54:25,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:54:25,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:25,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:54:25,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:54:25,578 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 6 states. [2019-12-07 13:54:25,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:25,638 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2019-12-07 13:54:25,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:54:25,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-12-07 13:54:25,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:25,638 INFO L225 Difference]: With dead ends: 61 [2019-12-07 13:54:25,638 INFO L226 Difference]: Without dead ends: 42 [2019-12-07 13:54:25,639 INFO L630 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 [2019-12-07 13:54:25,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-12-07 13:54:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2019-12-07 13:54:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 13:54:25,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2019-12-07 13:54:25,641 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 20 [2019-12-07 13:54:25,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:25,641 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2019-12-07 13:54:25,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:54:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2019-12-07 13:54:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 13:54:25,641 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:25,641 INFO L410 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] [2019-12-07 13:54:25,642 INFO L410 AbstractCegarLoop]: === Iteration 11 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:25,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:25,642 INFO L82 PathProgramCache]: Analyzing trace with hash 956679290, now seen corresponding path program 1 times [2019-12-07 13:54:25,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:25,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640577139] [2019-12-07 13:54:25,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:25,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640577139] [2019-12-07 13:54:25,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468163753] [2019-12-07 13:54:25,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:54:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:25,775 INFO L264 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 13:54:25,776 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:54:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:25,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:54:25,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2019-12-07 13:54:25,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640504848] [2019-12-07 13:54:25,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 13:54:25,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:25,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 13:54:25,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2019-12-07 13:54:25,839 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 16 states. [2019-12-07 13:54:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:26,002 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2019-12-07 13:54:26,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 13:54:26,002 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2019-12-07 13:54:26,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:26,003 INFO L225 Difference]: With dead ends: 41 [2019-12-07 13:54:26,003 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 13:54:26,003 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2019-12-07 13:54:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 13:54:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-12-07 13:54:26,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 13:54:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-12-07 13:54:26,011 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 23 [2019-12-07 13:54:26,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:26,011 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-12-07 13:54:26,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 13:54:26,011 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-12-07 13:54:26,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 13:54:26,012 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:26,012 INFO L410 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] [2019-12-07 13:54:26,212 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:54:26,213 INFO L410 AbstractCegarLoop]: === Iteration 12 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:26,213 INFO L82 PathProgramCache]: Analyzing trace with hash -403117159, now seen corresponding path program 2 times [2019-12-07 13:54:26,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:26,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930647836] [2019-12-07 13:54:26,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:26,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930647836] [2019-12-07 13:54:26,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078791836] [2019-12-07 13:54:26,404 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:54:26,465 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 13:54:26,465 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:54:26,466 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 34 conjunts are in the unsatisfiable core [2019-12-07 13:54:26,468 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:54:26,497 INFO L377 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 [2019-12-07 13:54:26,497 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:54:26,503 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:26,504 INFO L534 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. [2019-12-07 13:54:26,505 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2019-12-07 13:54:26,619 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:26,619 INFO L377 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 [2019-12-07 13:54:26,619 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-12-07 13:54:26,627 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:26,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:54:26,630 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:54:26,630 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:31 [2019-12-07 13:54:26,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:54:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:26,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:54:26,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2019-12-07 13:54:26,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944616341] [2019-12-07 13:54:26,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-12-07 13:54:26,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:26,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-07 13:54:26,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2019-12-07 13:54:26,701 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 21 states. [2019-12-07 13:54:30,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:30,455 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2019-12-07 13:54:30,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-07 13:54:30,455 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 28 [2019-12-07 13:54:30,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:30,456 INFO L225 Difference]: With dead ends: 91 [2019-12-07 13:54:30,456 INFO L226 Difference]: Without dead ends: 78 [2019-12-07 13:54:30,457 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=231, Invalid=1661, Unknown=0, NotChecked=0, Total=1892 [2019-12-07 13:54:30,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-12-07 13:54:30,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2019-12-07 13:54:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-12-07 13:54:30,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2019-12-07 13:54:30,460 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 28 [2019-12-07 13:54:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:30,461 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2019-12-07 13:54:30,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-12-07 13:54:30,461 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2019-12-07 13:54:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-12-07 13:54:30,462 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:30,462 INFO L410 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] [2019-12-07 13:54:30,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:54:30,663 INFO L410 AbstractCegarLoop]: === Iteration 13 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:30,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:30,663 INFO L82 PathProgramCache]: Analyzing trace with hash -227169609, now seen corresponding path program 3 times [2019-12-07 13:54:30,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:30,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267747112] [2019-12-07 13:54:30,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:30,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267747112] [2019-12-07 13:54:30,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498571157] [2019-12-07 13:54:30,817 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:54:30,884 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 13:54:30,884 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:54:30,885 INFO L264 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 33 conjunts are in the unsatisfiable core [2019-12-07 13:54:30,887 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:54:30,962 INFO L377 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 [2019-12-07 13:54:30,962 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:54:30,966 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:30,967 INFO L534 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. [2019-12-07 13:54:30,967 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2019-12-07 13:54:31,060 INFO L377 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 [2019-12-07 13:54:31,060 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:54:31,061 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:31,062 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:54:31,062 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-12-07 13:54:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:31,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:54:31,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2019-12-07 13:54:31,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032011218] [2019-12-07 13:54:31,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 13:54:31,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:31,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 13:54:31,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2019-12-07 13:54:31,066 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 22 states. [2019-12-07 13:54:31,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:31,576 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2019-12-07 13:54:31,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-07 13:54:31,576 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 37 [2019-12-07 13:54:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:31,577 INFO L225 Difference]: With dead ends: 80 [2019-12-07 13:54:31,577 INFO L226 Difference]: Without dead ends: 57 [2019-12-07 13:54:31,578 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2019-12-07 13:54:31,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-12-07 13:54:31,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2019-12-07 13:54:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-12-07 13:54:31,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2019-12-07 13:54:31,581 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 37 [2019-12-07 13:54:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:31,581 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2019-12-07 13:54:31,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 13:54:31,582 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2019-12-07 13:54:31,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-12-07 13:54:31,583 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:31,583 INFO L410 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] [2019-12-07 13:54:31,786 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:54:31,786 INFO L410 AbstractCegarLoop]: === Iteration 14 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:31,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:31,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1399570668, now seen corresponding path program 4 times [2019-12-07 13:54:31,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:31,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990834428] [2019-12-07 13:54:31,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:31,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990834428] [2019-12-07 13:54:31,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451616999] [2019-12-07 13:54:31,914 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:54:31,974 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 13:54:31,975 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:54:31,976 INFO L264 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 30 conjunts are in the unsatisfiable core [2019-12-07 13:54:31,977 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:54:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:32,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:54:32,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2019-12-07 13:54:32,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631654318] [2019-12-07 13:54:32,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 13:54:32,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:32,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 13:54:32,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2019-12-07 13:54:32,074 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 22 states. [2019-12-07 13:54:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:32,392 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2019-12-07 13:54:32,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 13:54:32,392 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2019-12-07 13:54:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:32,393 INFO L225 Difference]: With dead ends: 63 [2019-12-07 13:54:32,393 INFO L226 Difference]: Without dead ends: 63 [2019-12-07 13:54:32,394 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2019-12-07 13:54:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-12-07 13:54:32,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2019-12-07 13:54:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-12-07 13:54:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2019-12-07 13:54:32,396 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 41 [2019-12-07 13:54:32,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:32,396 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2019-12-07 13:54:32,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 13:54:32,396 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2019-12-07 13:54:32,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-07 13:54:32,397 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:32,397 INFO L410 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] [2019-12-07 13:54:32,598 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:54:32,598 INFO L410 AbstractCegarLoop]: === Iteration 15 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:32,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1288634049, now seen corresponding path program 5 times [2019-12-07 13:54:32,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:32,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101894331] [2019-12-07 13:54:32,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:32,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101894331] [2019-12-07 13:54:32,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850573688] [2019-12-07 13:54:32,779 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:54:32,840 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-12-07 13:54:32,840 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:54:32,841 INFO L264 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 46 conjunts are in the unsatisfiable core [2019-12-07 13:54:32,843 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:54:32,847 INFO L377 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 [2019-12-07 13:54:32,848 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:54:32,852 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:32,852 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:54:32,852 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-12-07 13:54:32,922 INFO L377 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 [2019-12-07 13:54:32,922 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:54:32,926 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:32,926 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:54:32,927 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-12-07 13:54:33,076 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:33,076 INFO L377 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 19 treesize of output 19 [2019-12-07 13:54:33,076 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-12-07 13:54:33,081 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:33,082 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:54:33,082 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:21 [2019-12-07 13:54:33,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:54:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:33,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:54:33,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 29 [2019-12-07 13:54:33,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833509056] [2019-12-07 13:54:33,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-12-07 13:54:33,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:33,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-12-07 13:54:33,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=752, Unknown=0, NotChecked=0, Total=812 [2019-12-07 13:54:33,172 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 29 states. [2019-12-07 13:54:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:35,456 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2019-12-07 13:54:35,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-12-07 13:54:35,457 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 46 [2019-12-07 13:54:35,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:35,458 INFO L225 Difference]: With dead ends: 114 [2019-12-07 13:54:35,458 INFO L226 Difference]: Without dead ends: 87 [2019-12-07 13:54:35,460 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=250, Invalid=2506, Unknown=0, NotChecked=0, Total=2756 [2019-12-07 13:54:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-12-07 13:54:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 72. [2019-12-07 13:54:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-12-07 13:54:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2019-12-07 13:54:35,465 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 46 [2019-12-07 13:54:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:35,465 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2019-12-07 13:54:35,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-12-07 13:54:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2019-12-07 13:54:35,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-12-07 13:54:35,467 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:35,467 INFO L410 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] [2019-12-07 13:54:35,668 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:54:35,668 INFO L410 AbstractCegarLoop]: === Iteration 16 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:35,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:35,669 INFO L82 PathProgramCache]: Analyzing trace with hash -278982767, now seen corresponding path program 6 times [2019-12-07 13:54:35,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:35,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895395043] [2019-12-07 13:54:35,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:35,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895395043] [2019-12-07 13:54:35,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380475689] [2019-12-07 13:54:35,873 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:54:35,945 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-12-07 13:54:35,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:54:35,947 INFO L264 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2019-12-07 13:54:35,949 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:54:36,057 INFO L377 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 [2019-12-07 13:54:36,057 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:54:36,061 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:36,062 INFO L534 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. [2019-12-07 13:54:36,062 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2019-12-07 13:54:36,171 INFO L377 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 [2019-12-07 13:54:36,171 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:54:36,172 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:36,173 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:54:36,173 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-12-07 13:54:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:36,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:54:36,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 28 [2019-12-07 13:54:36,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010698859] [2019-12-07 13:54:36,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-07 13:54:36,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:36,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-07 13:54:36,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2019-12-07 13:54:36,179 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 28 states. [2019-12-07 13:54:36,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:36,927 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2019-12-07 13:54:36,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-12-07 13:54:36,927 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2019-12-07 13:54:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:36,928 INFO L225 Difference]: With dead ends: 128 [2019-12-07 13:54:36,928 INFO L226 Difference]: Without dead ends: 79 [2019-12-07 13:54:36,928 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2019-12-07 13:54:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-12-07 13:54:36,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2019-12-07 13:54:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 13:54:36,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2019-12-07 13:54:36,930 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 55 [2019-12-07 13:54:36,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:36,931 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2019-12-07 13:54:36,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-07 13:54:36,931 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2019-12-07 13:54:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-12-07 13:54:36,932 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:36,932 INFO L410 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] [2019-12-07 13:54:37,132 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:54:37,133 INFO L410 AbstractCegarLoop]: === Iteration 17 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:37,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:37,133 INFO L82 PathProgramCache]: Analyzing trace with hash -714725714, now seen corresponding path program 7 times [2019-12-07 13:54:37,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:37,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650980526] [2019-12-07 13:54:37,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:37,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650980526] [2019-12-07 13:54:37,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202440171] [2019-12-07 13:54:37,319 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:54:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:37,388 INFO L264 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 40 conjunts are in the unsatisfiable core [2019-12-07 13:54:37,390 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:54:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:37,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:54:37,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 27 [2019-12-07 13:54:37,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020138240] [2019-12-07 13:54:37,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-07 13:54:37,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:37,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-07 13:54:37,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2019-12-07 13:54:37,521 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 28 states. [2019-12-07 13:54:38,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:38,233 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2019-12-07 13:54:38,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 13:54:38,234 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 59 [2019-12-07 13:54:38,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:38,235 INFO L225 Difference]: With dead ends: 85 [2019-12-07 13:54:38,235 INFO L226 Difference]: Without dead ends: 85 [2019-12-07 13:54:38,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2019-12-07 13:54:38,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-12-07 13:54:38,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2019-12-07 13:54:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-12-07 13:54:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2019-12-07 13:54:38,240 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 59 [2019-12-07 13:54:38,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:38,241 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2019-12-07 13:54:38,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-07 13:54:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2019-12-07 13:54:38,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-12-07 13:54:38,242 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:38,243 INFO L410 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] [2019-12-07 13:54:38,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:54:38,444 INFO L410 AbstractCegarLoop]: === Iteration 18 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:54:38,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:38,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1690187291, now seen corresponding path program 8 times [2019-12-07 13:54:38,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:54:38,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323995711] [2019-12-07 13:54:38,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:38,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323995711] [2019-12-07 13:54:38,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145124876] [2019-12-07 13:54:38,678 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:54:38,745 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 13:54:38,745 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:54:38,746 INFO L264 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 54 conjunts are in the unsatisfiable core [2019-12-07 13:54:38,749 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:54:38,866 INFO L377 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 [2019-12-07 13:54:38,866 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:54:38,876 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:38,876 INFO L534 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. [2019-12-07 13:54:38,876 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2019-12-07 13:54:39,218 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:39,218 INFO L377 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 [2019-12-07 13:54:39,219 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-12-07 13:54:39,226 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:54:39,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:54:39,227 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:54:39,227 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:31 [2019-12-07 13:54:39,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:54:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 28 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:39,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:54:39,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 37 [2019-12-07 13:54:39,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713916035] [2019-12-07 13:54:39,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-12-07 13:54:39,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:54:39,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-12-07 13:54:39,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2019-12-07 13:54:39,522 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 37 states. [2019-12-07 13:55:03,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:55:03,486 INFO L93 Difference]: Finished difference Result 225 states and 249 transitions. [2019-12-07 13:55:03,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-12-07 13:55:03,486 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 64 [2019-12-07 13:55:03,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:55:03,487 INFO L225 Difference]: With dead ends: 225 [2019-12-07 13:55:03,487 INFO L226 Difference]: Without dead ends: 146 [2019-12-07 13:55:03,490 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=495, Invalid=6147, Unknown=0, NotChecked=0, Total=6642 [2019-12-07 13:55:03,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-12-07 13:55:03,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 94. [2019-12-07 13:55:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-12-07 13:55:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2019-12-07 13:55:03,493 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 64 [2019-12-07 13:55:03,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:55:03,493 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2019-12-07 13:55:03,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-12-07 13:55:03,493 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2019-12-07 13:55:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-12-07 13:55:03,494 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:55:03,494 INFO L410 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] [2019-12-07 13:55:03,695 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:55:03,695 INFO L410 AbstractCegarLoop]: === Iteration 19 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:55:03,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:55:03,696 INFO L82 PathProgramCache]: Analyzing trace with hash -63147669, now seen corresponding path program 9 times [2019-12-07 13:55:03,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:55:03,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7650686] [2019-12-07 13:55:03,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:55:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:55:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:55:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 25 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:55:03,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7650686] [2019-12-07 13:55:03,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928622149] [2019-12-07 13:55:03,997 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/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 [2019-12-07 13:55:04,083 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-12-07 13:55:04,083 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:55:04,084 INFO L264 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 38 conjunts are in the unsatisfiable core [2019-12-07 13:55:04,086 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:55:04,089 INFO L377 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 [2019-12-07 13:55:04,089 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:55:04,092 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:55:04,092 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:55:04,093 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 13:55:04,115 INFO L377 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 15 treesize of output 11 [2019-12-07 13:55:04,115 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:55:04,116 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:55:04,117 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:55:04,117 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-12-07 13:55:04,191 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:55:04,192 INFO L377 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 19 treesize of output 19 [2019-12-07 13:55:04,192 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-12-07 13:55:04,195 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:55:04,195 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-12-07 13:55:04,195 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:12 [2019-12-07 13:55:04,219 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:55:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-12-07 13:55:04,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:55:04,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 9] total 30 [2019-12-07 13:55:04,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310996607] [2019-12-07 13:55:04,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-12-07 13:55:04,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:55:04,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-12-07 13:55:04,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2019-12-07 13:55:04,308 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand 30 states. [2019-12-07 13:55:08,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:55:08,423 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2019-12-07 13:55:08,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-12-07 13:55:08,424 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 73 [2019-12-07 13:55:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:55:08,424 INFO L225 Difference]: With dead ends: 173 [2019-12-07 13:55:08,424 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 13:55:08,426 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1434 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=783, Invalid=6527, Unknown=0, NotChecked=0, Total=7310 [2019-12-07 13:55:08,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 13:55:08,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 13:55:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 13:55:08,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:55:08,426 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2019-12-07 13:55:08,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:55:08,427 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:55:08,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-12-07 13:55:08,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:55:08,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 13:55:08,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:55:08,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:55:08 BoogieIcfgContainer [2019-12-07 13:55:08,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:55:08,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:55:08,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:55:08,635 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:55:08,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:54:23" (3/4) ... [2019-12-07 13:55:08,642 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 13:55:08,652 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-12-07 13:55:08,652 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrreplace [2019-12-07 13:55:08,652 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-12-07 13:55:08,653 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-12-07 13:55:08,653 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-12-07 13:55:08,653 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-12-07 13:55:08,653 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-12-07 13:55:08,653 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-12-07 13:55:08,658 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2019-12-07 13:55:08,658 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 13:55:08,658 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 13:55:08,658 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 13:55:08,685 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_aef6cb9a-e8bb-4cf7-8896-768f11597863/bin/uautomizer/witness.graphml [2019-12-07 13:55:08,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:55:08,686 INFO L168 Benchmark]: Toolchain (without parser) took 46007.52 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 225.4 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -143.2 MB). Peak memory consumption was 82.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:55:08,686 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:55:08,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.4 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -143.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:55:08,687 INFO L168 Benchmark]: Boogie Preprocessor took 37.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:55:08,687 INFO L168 Benchmark]: RCFGBuilder took 301.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:55:08,687 INFO L168 Benchmark]: TraceAbstraction took 45320.08 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 131.1 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -60.1 MB). Peak memory consumption was 70.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:55:08,687 INFO L168 Benchmark]: Witness Printer took 50.56 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:55:08,688 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 293.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.4 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -143.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 301.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 45320.08 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 131.1 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -60.1 MB). Peak memory consumption was 70.9 MB. Max. memory is 11.5 GB. * Witness Printer took 50.56 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 517]: 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 - 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: 45.2s, OverallIterations: 19, TraceHistogramMax: 7, AutomataDifference: 37.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 515 SDtfs, 2101 SDslu, 1505 SDs, 0 SdLazy, 9224 SolverSat, 486 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 27.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 873 GetRequests, 386 SyntacticMatches, 12 SemanticMatches, 475 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4337 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 19 MinimizatonAttempts, 164 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1006 NumberOfCodeBlocks, 1006 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 977 ConstructedInterpolants, 54 QuantifiedInterpolants, 418578 SizeOfPredicates, 83 NumberOfNonLiveVariables, 1778 ConjunctsInSsa, 353 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 374/1212 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...