./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 3e28603c63113c1566dc2e06da17c63059f80486 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:03:58,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:03:58,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:03:58,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:03:58,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:03:58,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:03:58,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:03:58,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:03:58,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:03:58,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:03:58,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:03:58,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:03:58,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:03:58,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:03:58,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:03:58,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:03:58,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:03:58,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:03:58,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:03:58,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:03:58,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:03:58,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:03:58,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:03:58,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:03:58,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:03:58,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:03:58,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:03:58,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:03:58,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:03:58,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:03:58,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:03:58,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:03:58,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:03:58,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:03:58,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:03:58,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:03:58,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:03:58,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:03:58,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:03:58,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:03:58,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:03:58,163 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:03:58,178 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:03:58,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:03:58,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:03:58,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:03:58,181 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:03:58,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:03:58,181 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:03:58,182 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:03:58,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:03:58,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:03:58,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:03:58,183 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:03:58,183 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:03:58,183 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:03:58,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:03:58,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:03:58,184 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:03:58,185 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:03:58,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:03:58,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:03:58,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:03:58,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:03:58,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:03:58,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:03:58,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:03:58,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:03:58,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:03:58,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:03:58,188 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 3e28603c63113c1566dc2e06da17c63059f80486 [2019-11-28 20:03:58,479 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:03:58,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:03:58,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:03:58,504 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:03:58,504 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:03:58,506 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-11-28 20:03:58,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c1318751/7856028c3499482ea15e848266d011ca/FLAGfbaf9dbc6 [2019-11-28 20:03:59,133 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:03:59,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-11-28 20:03:59,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c1318751/7856028c3499482ea15e848266d011ca/FLAGfbaf9dbc6 [2019-11-28 20:03:59,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c1318751/7856028c3499482ea15e848266d011ca [2019-11-28 20:03:59,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:03:59,444 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:03:59,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:03:59,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:03:59,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:03:59,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:03:59" (1/1) ... [2019-11-28 20:03:59,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad63d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59, skipping insertion in model container [2019-11-28 20:03:59,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:03:59" (1/1) ... [2019-11-28 20:03:59,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:03:59,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:03:59,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:03:59,932 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:03:59,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:04:00,045 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:04:00,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:00 WrapperNode [2019-11-28 20:04:00,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:04:00,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:04:00,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:04:00,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:04:00,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:00" (1/1) ... [2019-11-28 20:04:00,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:00" (1/1) ... [2019-11-28 20:04:00,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:00" (1/1) ... [2019-11-28 20:04:00,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:00" (1/1) ... [2019-11-28 20:04:00,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:00" (1/1) ... [2019-11-28 20:04:00,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:00" (1/1) ... [2019-11-28 20:04:00,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:00" (1/1) ... [2019-11-28 20:04:00,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:04:00,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:04:00,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:04:00,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:04:00,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:04:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:04:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:04:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:04:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:04:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:04:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:04:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:04:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:04:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:04:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:04:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:04:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:04:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:04:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:04:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:04:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:04:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:04:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:04:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:04:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:04:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:04:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:04:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:04:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:04:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:04:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:04:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:04:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:04:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:04:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:04:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:04:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:04:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:04:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:04:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:04:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:04:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:04:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:04:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:04:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:04:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:04:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:04:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:04:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:04:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:04:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:04:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:04:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:04:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:04:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:04:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:04:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:04:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:04:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:04:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:04:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:04:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:04:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:04:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:04:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:04:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:04:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:04:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:04:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:04:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:04:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:04:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:04:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:04:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:04:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:04:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:04:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:04:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:04:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:04:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:04:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:04:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:04:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:04:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:04:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:04:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:04:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:04:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:04:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:04:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:04:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:04:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:04:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:04:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:04:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:04:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:04:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:04:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:04:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:04:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:04:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:04:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:04:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:04:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:04:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:04:00,195 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:04:00,195 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:04:00,195 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:04:00,195 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:04:00,195 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:04:00,196 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:04:00,196 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:04:00,196 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:04:00,196 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:04:00,196 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:04:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:04:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:04:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:04:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:04:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:04:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:04:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:04:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 20:04:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:04:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:04:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:04:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:04:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:04:00,803 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:04:00,803 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-28 20:04:00,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:00 BoogieIcfgContainer [2019-11-28 20:04:00,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:04:00,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:04:00,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:04:00,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:04:00,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:03:59" (1/3) ... [2019-11-28 20:04:00,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77424177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:00, skipping insertion in model container [2019-11-28 20:04:00,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:00" (2/3) ... [2019-11-28 20:04:00,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77424177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:00, skipping insertion in model container [2019-11-28 20:04:00,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:00" (3/3) ... [2019-11-28 20:04:00,814 INFO L109 eAbstractionObserver]: Analyzing ICFG count_down-alloca-1.i [2019-11-28 20:04:00,824 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:04:00,832 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-11-28 20:04:00,845 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-11-28 20:04:00,867 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:04:00,867 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:04:00,868 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:04:00,868 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:04:00,868 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:04:00,868 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:04:00,869 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:04:00,869 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:04:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-28 20:04:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:04:00,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:00,897 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:00,897 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:00,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:00,904 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2019-11-28 20:04:00,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:00,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011585950] [2019-11-28 20:04:00,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:01,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011585950] [2019-11-28 20:04:01,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:01,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:04:01,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017572647] [2019-11-28 20:04:01,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:04:01,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:01,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:04:01,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:04:01,186 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-11-28 20:04:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:01,386 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-11-28 20:04:01,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:01,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 20:04:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:01,402 INFO L225 Difference]: With dead ends: 36 [2019-11-28 20:04:01,402 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 20:04:01,407 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:01,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 20:04:01,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-28 20:04:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-28 20:04:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-28 20:04:01,457 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2019-11-28 20:04:01,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:01,458 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-28 20:04:01,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:04:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-28 20:04:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 20:04:01,459 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:01,460 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:01,460 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:01,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2019-11-28 20:04:01,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:01,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075682987] [2019-11-28 20:04:01,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:01,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075682987] [2019-11-28 20:04:01,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:01,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:04:01,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834500914] [2019-11-28 20:04:01,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:04:01,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:01,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:04:01,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:04:01,588 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2019-11-28 20:04:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:01,675 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-11-28 20:04:01,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:04:01,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 20:04:01,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:01,677 INFO L225 Difference]: With dead ends: 29 [2019-11-28 20:04:01,677 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 20:04:01,678 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 [2019-11-28 20:04:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 20:04:01,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 20:04:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 20:04:01,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-11-28 20:04:01,684 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2019-11-28 20:04:01,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:01,684 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-11-28 20:04:01,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:04:01,685 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-11-28 20:04:01,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 20:04:01,685 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:01,686 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:01,686 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:01,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:01,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2019-11-28 20:04:01,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:01,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516223589] [2019-11-28 20:04:01,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:01,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516223589] [2019-11-28 20:04:01,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:01,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 20:04:01,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8980084] [2019-11-28 20:04:01,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:04:01,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:01,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:04:01,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:04:01,842 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 7 states. [2019-11-28 20:04:01,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:01,979 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-28 20:04:01,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:04:01,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-28 20:04:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:01,981 INFO L225 Difference]: With dead ends: 33 [2019-11-28 20:04:01,981 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 20:04:01,982 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:04:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 20:04:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-28 20:04:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-28 20:04:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-11-28 20:04:01,988 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2019-11-28 20:04:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:01,988 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-11-28 20:04:01,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:04:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-11-28 20:04:01,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 20:04:01,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:01,990 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:01,990 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:01,991 INFO L82 PathProgramCache]: Analyzing trace with hash 467596310, now seen corresponding path program 1 times [2019-11-28 20:04:01,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:01,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960162814] [2019-11-28 20:04:01,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:02,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960162814] [2019-11-28 20:04:02,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124257847] [2019-11-28 20:04:02,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:02,184 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:04:02,190 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:02,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:04:02,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2019-11-28 20:04:02,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617765725] [2019-11-28 20:04:02,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:02,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:02,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:02,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:04:02,264 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2019-11-28 20:04:02,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:02,317 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2019-11-28 20:04:02,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:02,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-28 20:04:02,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:02,320 INFO L225 Difference]: With dead ends: 54 [2019-11-28 20:04:02,320 INFO L226 Difference]: Without dead ends: 54 [2019-11-28 20:04:02,322 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:04:02,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-28 20:04:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-11-28 20:04:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 20:04:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-11-28 20:04:02,329 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 16 [2019-11-28 20:04:02,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:02,330 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-11-28 20:04:02,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-11-28 20:04:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 20:04:02,332 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:02,332 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:02,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:02,536 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:02,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:02,537 INFO L82 PathProgramCache]: Analyzing trace with hash 74569300, now seen corresponding path program 1 times [2019-11-28 20:04:02,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:02,538 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102219921] [2019-11-28 20:04:02,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:02,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102219921] [2019-11-28 20:04:02,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155806667] [2019-11-28 20:04:02,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:02,794 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 20:04:02,796 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:02,841 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 8 treesize of output 7 [2019-11-28 20:04:02,842 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:04:02,851 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:04:02,852 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:04:02,852 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2019-11-28 20:04:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:02,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:04:02,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-28 20:04:02,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239860229] [2019-11-28 20:04:02,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 20:04:02,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:02,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:04:02,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:04:02,891 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2019-11-28 20:04:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:03,050 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-11-28 20:04:03,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:04:03,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-28 20:04:03,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:03,052 INFO L225 Difference]: With dead ends: 39 [2019-11-28 20:04:03,052 INFO L226 Difference]: Without dead ends: 39 [2019-11-28 20:04:03,053 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:04:03,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-28 20:04:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2019-11-28 20:04:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 20:04:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-11-28 20:04:03,059 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2019-11-28 20:04:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:03,060 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-11-28 20:04:03,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 20:04:03,060 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-11-28 20:04:03,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 20:04:03,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:03,061 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:03,265 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:03,266 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:03,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:03,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1610534241, now seen corresponding path program 1 times [2019-11-28 20:04:03,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:03,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721881853] [2019-11-28 20:04:03,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:03,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721881853] [2019-11-28 20:04:03,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972592258] [2019-11-28 20:04:03,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:03,458 INFO L264 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 20:04:03,460 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:03,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:04:03,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2019-11-28 20:04:03,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698710884] [2019-11-28 20:04:03,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 20:04:03,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:03,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 20:04:03,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:04:03,500 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 9 states. [2019-11-28 20:04:03,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:03,678 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2019-11-28 20:04:03,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 20:04:03,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-11-28 20:04:03,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:03,681 INFO L225 Difference]: With dead ends: 50 [2019-11-28 20:04:03,681 INFO L226 Difference]: Without dead ends: 50 [2019-11-28 20:04:03,682 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:04:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-28 20:04:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2019-11-28 20:04:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 20:04:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2019-11-28 20:04:03,690 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2019-11-28 20:04:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:03,690 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2019-11-28 20:04:03,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 20:04:03,691 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2019-11-28 20:04:03,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:04:03,692 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:03,692 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:03,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:03,897 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:03,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:03,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1613047272, now seen corresponding path program 1 times [2019-11-28 20:04:03,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:03,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406627499] [2019-11-28 20:04:03,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:04:03,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406627499] [2019-11-28 20:04:03,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:03,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:04:03,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101298899] [2019-11-28 20:04:03,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:03,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:03,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:03,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:03,969 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2019-11-28 20:04:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:04,083 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-11-28 20:04:04,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:04:04,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-28 20:04:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:04,089 INFO L225 Difference]: With dead ends: 44 [2019-11-28 20:04:04,089 INFO L226 Difference]: Without dead ends: 44 [2019-11-28 20:04:04,090 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:04:04,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-28 20:04:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-11-28 20:04:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 20:04:04,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-11-28 20:04:04,095 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2019-11-28 20:04:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:04,095 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-11-28 20:04:04,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-11-28 20:04:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 20:04:04,097 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:04,097 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:04,097 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:04,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:04,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2133289012, now seen corresponding path program 1 times [2019-11-28 20:04:04,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:04,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487196730] [2019-11-28 20:04:04,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:04,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487196730] [2019-11-28 20:04:04,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881147648] [2019-11-28 20:04:04,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:04,337 INFO L264 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:04:04,339 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:04:04,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:04:04,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2019-11-28 20:04:04,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401743348] [2019-11-28 20:04:04,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:04,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:04,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:04,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:04:04,409 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2019-11-28 20:04:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:04,445 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2019-11-28 20:04:04,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:04:04,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-28 20:04:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:04,447 INFO L225 Difference]: With dead ends: 56 [2019-11-28 20:04:04,448 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 20:04:04,448 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:04:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 20:04:04,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-11-28 20:04:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-28 20:04:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2019-11-28 20:04:04,463 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 21 [2019-11-28 20:04:04,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:04,463 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2019-11-28 20:04:04,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2019-11-28 20:04:04,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 20:04:04,466 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:04,466 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:04,670 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:04,670 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:04,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:04,671 INFO L82 PathProgramCache]: Analyzing trace with hash 853425334, now seen corresponding path program 1 times [2019-11-28 20:04:04,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:04,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252667786] [2019-11-28 20:04:04,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:04,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252667786] [2019-11-28 20:04:04,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174853239] [2019-11-28 20:04:04,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:04,908 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:04:04,911 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:04:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:04,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:04:04,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2019-11-28 20:04:04,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705236277] [2019-11-28 20:04:04,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 20:04:05,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:05,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 20:04:05,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:04:05,000 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 14 states. [2019-11-28 20:04:05,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:05,549 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2019-11-28 20:04:05,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-28 20:04:05,550 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2019-11-28 20:04:05,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:05,551 INFO L225 Difference]: With dead ends: 74 [2019-11-28 20:04:05,551 INFO L226 Difference]: Without dead ends: 74 [2019-11-28 20:04:05,552 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2019-11-28 20:04:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-28 20:04:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 48. [2019-11-28 20:04:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-28 20:04:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2019-11-28 20:04:05,559 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 21 [2019-11-28 20:04:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:05,559 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-11-28 20:04:05,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 20:04:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2019-11-28 20:04:05,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 20:04:05,560 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:05,561 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] [2019-11-28 20:04:05,765 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:04:05,772 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:05,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1707448741, now seen corresponding path program 1 times [2019-11-28 20:04:05,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:05,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799278921] [2019-11-28 20:04:05,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 20:04:05,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799278921] [2019-11-28 20:04:05,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:05,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:04:05,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444208082] [2019-11-28 20:04:05,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:05,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:05,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:05,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:05,859 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2019-11-28 20:04:05,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:05,894 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-11-28 20:04:05,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:04:05,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-28 20:04:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:05,895 INFO L225 Difference]: With dead ends: 47 [2019-11-28 20:04:05,896 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:04:05,896 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:04:05,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:04:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:04:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:04:05,897 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-28 20:04:05,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:04:05,897 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:04:05,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:04:05,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:04:05,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:04:05,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:04:05 BoogieIcfgContainer [2019-11-28 20:04:05,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:04:05,903 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:04:05,903 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:04:05,903 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:04:05,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:00" (3/4) ... [2019-11-28 20:04:05,907 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:04:05,915 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-28 20:04:05,916 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-28 20:04:05,916 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-28 20:04:05,916 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-28 20:04:05,917 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-28 20:04:05,917 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-28 20:04:05,917 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-28 20:04:05,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-28 20:04:05,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-28 20:04:05,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 20:04:05,923 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 20:04:05,971 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:04:05,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:04:05,973 INFO L168 Benchmark]: Toolchain (without parser) took 6529.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 195.0 MB). Free memory was 957.7 MB in the beginning and 973.8 MB in the end (delta: -16.1 MB). Peak memory consumption was 178.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:05,974 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:04:05,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 602.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -148.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:05,975 INFO L168 Benchmark]: Boogie Preprocessor took 65.64 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:05,976 INFO L168 Benchmark]: RCFGBuilder took 691.15 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: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:05,977 INFO L168 Benchmark]: TraceAbstraction took 5096.49 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.0 GB in the beginning and 973.8 MB in the end (delta: 68.6 MB). Peak memory consumption was 145.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:05,977 INFO L168 Benchmark]: Witness Printer took 68.85 ms. Allocated memory is still 1.2 GB. Free memory is still 973.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:04:05,980 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 602.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -148.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.64 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 691.15 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: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5096.49 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.0 GB in the beginning and 973.8 MB in the end (delta: 68.6 MB). Peak memory consumption was 145.2 MB. Max. memory is 11.5 GB. * Witness Printer took 68.85 ms. Allocated memory is still 1.2 GB. Free memory is still 973.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 51 locations, 9 error locations. Result: SAFE, OverallTime: 5.0s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 212 SDtfs, 517 SDslu, 352 SDs, 0 SdLazy, 679 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 23026 SizeOfPredicates, 12 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 18/29 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...