./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0158-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/memsafety/test-0158-2.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 c3baf3e1382b3477cfa26255004191fb506be280 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/memsafety/test-0158-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 c3baf3e1382b3477cfa26255004191fb506be280 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:04:10,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:04:10,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:04:10,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:04:10,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:04:10,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:04:10,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:04:10,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:04:10,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:04:10,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:04:10,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:04:10,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:04:10,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:04:10,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:04:10,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:04:10,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:04:10,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:04:10,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:04:10,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:04:10,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:04:10,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:04:10,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:04:10,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:04:10,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:04:10,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:04:10,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:04:10,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:04:10,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:04:10,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:04:10,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:04:10,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:04:10,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:04:10,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:04:10,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:04:10,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:04:10,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:04:10,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:04:10,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:04:10,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:04:10,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:04:10,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:04:10,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:04:10,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:04:10,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:04:10,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:04:10,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:04:10,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:04:10,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:04:10,352 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:04:10,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:04:10,353 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:04:10,353 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:04:10,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:04:10,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:04:10,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:04:10,354 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:04:10,354 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:04:10,354 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:04:10,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:04:10,355 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:04:10,355 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:04:10,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:04:10,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:04:10,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:04:10,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:04:10,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:10,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:04:10,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:04:10,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:04:10,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:04:10,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:04:10,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3baf3e1382b3477cfa26255004191fb506be280 [2021-08-30 17:04:10,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:04:10,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:04:10,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:04:10,709 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:04:10,710 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:04:10,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-2.i [2021-08-30 17:04:10,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b795ace5d/068ba34bd3844c368c81a97749eae014/FLAG7ce45820d [2021-08-30 17:04:11,269 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:04:11,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-2.i [2021-08-30 17:04:11,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b795ace5d/068ba34bd3844c368c81a97749eae014/FLAG7ce45820d [2021-08-30 17:04:11,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b795ace5d/068ba34bd3844c368c81a97749eae014 [2021-08-30 17:04:11,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:04:11,617 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:04:11,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:11,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:04:11,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:04:11,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:11" (1/1) ... [2021-08-30 17:04:11,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6bb281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:11, skipping insertion in model container [2021-08-30 17:04:11,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:11" (1/1) ... [2021-08-30 17:04:11,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:04:11,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:04:11,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:11,948 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:04:11,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:12,003 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:04:12,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:12 WrapperNode [2021-08-30 17:04:12,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:12,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:04:12,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:04:12,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:04:12,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:12" (1/1) ... [2021-08-30 17:04:12,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:12" (1/1) ... [2021-08-30 17:04:12,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:12" (1/1) ... [2021-08-30 17:04:12,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:12" (1/1) ... [2021-08-30 17:04:12,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:12" (1/1) ... [2021-08-30 17:04:12,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:12" (1/1) ... [2021-08-30 17:04:12,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:12" (1/1) ... [2021-08-30 17:04:12,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:04:12,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:04:12,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:04:12,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:04:12,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:12" (1/1) ... [2021-08-30 17:04:12,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:12,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:12,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:04:12,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:04:12,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:04:12,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:04:12,132 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:04:12,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:04:12,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:04:12,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:04:12,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:04:12,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:04:12,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:04:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:04:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:04:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:04:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:04:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:04:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:04:12,135 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:04:12,135 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:04:12,135 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:04:12,135 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:04:12,135 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:04:12,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:04:12,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:04:12,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:04:12,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:04:12,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:04:12,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:04:12,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:04:12,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:04:12,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:04:12,137 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:04:12,137 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:04:12,137 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:04:12,137 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:04:12,138 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:04:12,138 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:04:12,138 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:04:12,138 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:04:12,138 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:04:12,139 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:04:12,139 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:04:12,139 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:04:12,139 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:04:12,139 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:04:12,139 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:04:12,140 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:04:12,140 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:04:12,140 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:04:12,140 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:04:12,140 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:04:12,140 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:04:12,141 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:04:12,141 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:04:12,141 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:04:12,141 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:04:12,141 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:04:12,141 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:04:12,142 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:04:12,142 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:04:12,142 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:04:12,142 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:04:12,142 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:04:12,143 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:04:12,143 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:04:12,143 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:04:12,143 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:04:12,143 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:04:12,143 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:04:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:04:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:04:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:04:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:04:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:04:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:04:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:04:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:04:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:04:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:04:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:04:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:04:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:04:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:04:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:04:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:04:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:04:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:04:12,147 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:04:12,147 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:04:12,147 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:04:12,147 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:04:12,147 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:04:12,147 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:04:12,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:04:12,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:04:12,148 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:04:12,148 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:04:12,148 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:04:12,148 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:04:12,149 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:04:12,149 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:04:12,149 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:04:12,149 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:04:12,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:04:12,149 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:04:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:04:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:04:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:04:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:04:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:04:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:04:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:04:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:04:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:04:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:04:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:04:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:04:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:04:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:04:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:04:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:04:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:04:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:04:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:04:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:04:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:04:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 17:04:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:04:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:04:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 17:04:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:04:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:04:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 17:04:12,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:04:12,539 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-30 17:04:12,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:12 BoogieIcfgContainer [2021-08-30 17:04:12,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:04:12,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:04:12,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:04:12,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:04:12,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:04:11" (1/3) ... [2021-08-30 17:04:12,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f07a226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:12, skipping insertion in model container [2021-08-30 17:04:12,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:12" (2/3) ... [2021-08-30 17:04:12,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f07a226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:12, skipping insertion in model container [2021-08-30 17:04:12,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:12" (3/3) ... [2021-08-30 17:04:12,555 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2021-08-30 17:04:12,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:04:12,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-30 17:04:12,605 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:04:12,613 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:04:12,614 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-30 17:04:12,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 10 states have (on average 1.7) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 17:04:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:04:12,633 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:12,633 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:12,634 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-30 17:04:12,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:12,639 INFO L82 PathProgramCache]: Analyzing trace with hash -280547993, now seen corresponding path program 1 times [2021-08-30 17:04:12,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:12,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723456626] [2021-08-30 17:04:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:12,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:04:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:12,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:12,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723456626] [2021-08-30 17:04:12,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723456626] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:12,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:12,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:04:12,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825540923] [2021-08-30 17:04:12,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:04:12,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:04:12,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:04:12,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:04:12,947 INFO L87 Difference]: Start difference. First operand has 22 states, 10 states have (on average 1.7) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:12,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:12,995 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-08-30 17:04:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 17:04:12,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:04:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:13,003 INFO L225 Difference]: With dead ends: 19 [2021-08-30 17:04:13,004 INFO L226 Difference]: Without dead ends: 16 [2021-08-30 17:04:13,005 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.25ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:04:13,008 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.36ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.63ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:13,009 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 10 Invalid, 37 Unknown, 0 Unchecked, 1.36ms Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 31.63ms Time] [2021-08-30 17:04:13,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-30 17:04:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-30 17:04:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-08-30 17:04:13,034 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 7 [2021-08-30 17:04:13,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:13,034 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-08-30 17:04:13,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-08-30 17:04:13,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:04:13,035 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:13,035 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:13,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 17:04:13,036 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-30 17:04:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:13,037 INFO L82 PathProgramCache]: Analyzing trace with hash -280547992, now seen corresponding path program 1 times [2021-08-30 17:04:13,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:13,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152099222] [2021-08-30 17:04:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:13,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:04:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:13,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:13,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152099222] [2021-08-30 17:04:13,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152099222] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:13,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:13,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:04:13,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931236309] [2021-08-30 17:04:13,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:04:13,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:04:13,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:04:13,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:04:13,136 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:13,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:13,167 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-08-30 17:04:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 17:04:13,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:04:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:13,168 INFO L225 Difference]: With dead ends: 13 [2021-08-30 17:04:13,168 INFO L226 Difference]: Without dead ends: 13 [2021-08-30 17:04:13,169 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.55ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:04:13,170 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.66ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:13,170 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 25 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 27.66ms Time] [2021-08-30 17:04:13,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-30 17:04:13,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-30 17:04:13,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-08-30 17:04:13,173 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 7 [2021-08-30 17:04:13,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:13,173 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-08-30 17:04:13,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-08-30 17:04:13,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 17:04:13,174 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:13,175 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:13,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 17:04:13,175 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-30 17:04:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:13,176 INFO L82 PathProgramCache]: Analyzing trace with hash -28282382, now seen corresponding path program 1 times [2021-08-30 17:04:13,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:13,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854084116] [2021-08-30 17:04:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:13,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:04:13,199 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 17:04:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:04:13,236 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 17:04:13,236 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 17:04:13,237 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2021-08-30 17:04:13,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (5 of 7 remaining) [2021-08-30 17:04:13,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (4 of 7 remaining) [2021-08-30 17:04:13,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (3 of 7 remaining) [2021-08-30 17:04:13,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (2 of 7 remaining) [2021-08-30 17:04:13,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (1 of 7 remaining) [2021-08-30 17:04:13,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (0 of 7 remaining) [2021-08-30 17:04:13,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 17:04:13,245 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:04:13,252 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 17:04:13,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:04:13 BoogieIcfgContainer [2021-08-30 17:04:13,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:04:13,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:04:13,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:04:13,263 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:04:13,263 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:12" (3/4) ... [2021-08-30 17:04:13,266 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:04:13,266 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:04:13,267 INFO L158 Benchmark]: Toolchain (without parser) took 1650.18ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 30.3MB in the beginning and 46.8MB in the end (delta: -16.4MB). Peak memory consumption was 449.8kB. Max. memory is 16.1GB. [2021-08-30 17:04:13,267 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory was 36.0MB in the beginning and 35.9MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:04:13,268 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.73ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 30.2MB in the beginning and 51.2MB in the end (delta: -21.1MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-08-30 17:04:13,268 INFO L158 Benchmark]: Boogie Preprocessor took 66.23ms. Allocated memory is still 73.4MB. Free memory was 51.2MB in the beginning and 48.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 17:04:13,269 INFO L158 Benchmark]: RCFGBuilder took 468.93ms. Allocated memory is still 73.4MB. Free memory was 48.9MB in the beginning and 48.0MB in the end (delta: 906.0kB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2021-08-30 17:04:13,269 INFO L158 Benchmark]: TraceAbstraction took 716.40ms. Allocated memory is still 73.4MB. Free memory was 47.5MB in the beginning and 47.0MB in the end (delta: 448.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:04:13,270 INFO L158 Benchmark]: Witness Printer took 4.19ms. Allocated memory is still 73.4MB. Free memory was 47.0MB in the beginning and 46.8MB in the end (delta: 263.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:04:13,271 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory was 36.0MB in the beginning and 35.9MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.73ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 30.2MB in the beginning and 51.2MB in the end (delta: -21.1MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.23ms. Allocated memory is still 73.4MB. Free memory was 51.2MB in the beginning and 48.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 468.93ms. Allocated memory is still 73.4MB. Free memory was 48.9MB in the beginning and 48.0MB in the end (delta: 906.0kB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * TraceAbstraction took 716.40ms. Allocated memory is still 73.4MB. Free memory was 47.5MB in the beginning and 47.0MB in the end (delta: 448.2kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.19ms. Allocated memory is still 73.4MB. Free memory was 47.0MB in the beginning and 46.8MB in the end (delta: 263.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 523]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 523. Possible FailurePath: [L525-L532] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L533] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L534] data.str.p2 = &data VAL [data={3:0}] [L535] data.str.c[1] = sizeof data.str.p1 VAL [data={3:0}] [L536] return 0; [L536] return 0; VAL [\result=0] - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 40 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 640.15ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 10.93ms, AutomataDifference: 121.91ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.84ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 59.29ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 48.27ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 7 mSDtfsCounter, 56 mSolverCounterSat, 1.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.79ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 15.62ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.08ms SsaConstructionTime, 71.19ms SatisfiabilityAnalysisTime, 223.02ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:04:13,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:04:15,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:04:15,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:04:15,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:04:15,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:04:15,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:04:15,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:04:15,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:04:15,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:04:15,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:04:15,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:04:15,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:04:15,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:04:15,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:04:15,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:04:15,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:04:15,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:04:15,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:04:15,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:04:15,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:04:15,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:04:15,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:04:15,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:04:15,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:04:15,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:04:15,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:04:15,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:04:15,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:04:15,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:04:15,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:04:15,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:04:15,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:04:15,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:04:15,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:04:15,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:04:15,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:04:15,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:04:15,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:04:15,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:04:15,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:04:15,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:04:15,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:04:15,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:04:15,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:04:15,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:04:15,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:04:15,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:04:15,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:04:15,258 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:04:15,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:04:15,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:04:15,258 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:04:15,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:04:15,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:04:15,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:04:15,259 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:04:15,260 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:04:15,260 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:04:15,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:04:15,260 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:04:15,260 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:04:15,260 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:04:15,261 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:04:15,266 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:04:15,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:04:15,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:04:15,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:04:15,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:15,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:04:15,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:04:15,268 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:04:15,268 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:04:15,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:04:15,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:04:15,268 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3baf3e1382b3477cfa26255004191fb506be280 [2021-08-30 17:04:15,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:04:15,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:04:15,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:04:15,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:04:15,600 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:04:15,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-2.i [2021-08-30 17:04:15,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a1f1bc85/458ff9d2f3af49b0a14ca9f0c881ec0b/FLAG67f6213ba [2021-08-30 17:04:16,185 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:04:16,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-2.i [2021-08-30 17:04:16,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a1f1bc85/458ff9d2f3af49b0a14ca9f0c881ec0b/FLAG67f6213ba [2021-08-30 17:04:16,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a1f1bc85/458ff9d2f3af49b0a14ca9f0c881ec0b [2021-08-30 17:04:16,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:04:16,677 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:04:16,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:16,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:04:16,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:04:16,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:16" (1/1) ... [2021-08-30 17:04:16,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a892b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:16, skipping insertion in model container [2021-08-30 17:04:16,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:16" (1/1) ... [2021-08-30 17:04:16,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:04:16,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:04:17,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:17,048 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:04:17,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:17,114 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:04:17,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:17 WrapperNode [2021-08-30 17:04:17,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:17,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:04:17,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:04:17,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:04:17,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:17" (1/1) ... [2021-08-30 17:04:17,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:17" (1/1) ... [2021-08-30 17:04:17,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:17" (1/1) ... [2021-08-30 17:04:17,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:17" (1/1) ... [2021-08-30 17:04:17,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:17" (1/1) ... [2021-08-30 17:04:17,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:17" (1/1) ... [2021-08-30 17:04:17,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:17" (1/1) ... [2021-08-30 17:04:17,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:04:17,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:04:17,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:04:17,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:04:17,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:17" (1/1) ... [2021-08-30 17:04:17,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:17,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:17,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:04:17,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:04:17,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:04:17,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:04:17,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:04:17,286 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:04:17,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:04:17,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:04:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:04:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:04:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:04:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:04:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:04:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:04:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:04:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:04:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:04:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:04:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:04:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:04:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:04:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:04:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:04:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:04:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:04:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:04:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:04:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:04:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:04:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:04:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:04:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:04:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:04:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:04:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:04:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:04:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:04:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:04:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:04:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:04:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:04:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:04:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:04:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:04:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:04:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:04:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:04:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:04:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:04:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:04:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:04:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:04:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:04:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:04:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:04:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:04:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:04:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:04:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:04:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:04:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:04:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:04:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:04:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:04:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:04:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:04:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:04:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:04:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:04:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:04:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:04:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:04:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:04:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:04:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:04:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:04:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:04:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:04:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:04:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:04:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:04:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:04:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:04:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:04:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:04:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:04:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:04:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:04:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:04:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:04:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:04:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:04:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:04:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:04:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:04:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:04:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:04:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:04:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:04:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:04:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:04:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:04:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:04:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:04:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:04:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:04:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:04:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:04:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:04:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:04:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:04:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:04:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:04:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:04:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:04:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:04:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:04:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:04:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:04:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:04:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:04:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:04:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:04:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:04:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:04:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:04:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:04:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-30 17:04:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:04:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:04:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-30 17:04:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:04:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:04:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:04:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-30 17:04:17,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:04:17,644 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-30 17:04:17,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:17 BoogieIcfgContainer [2021-08-30 17:04:17,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:04:17,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:04:17,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:04:17,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:04:17,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:04:16" (1/3) ... [2021-08-30 17:04:17,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3ff28d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:17, skipping insertion in model container [2021-08-30 17:04:17,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:17" (2/3) ... [2021-08-30 17:04:17,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3ff28d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:17, skipping insertion in model container [2021-08-30 17:04:17,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:17" (3/3) ... [2021-08-30 17:04:17,652 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2021-08-30 17:04:17,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:04:17,657 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-30 17:04:17,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:04:17,704 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:04:17,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-30 17:04:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 10 states have (on average 1.7) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 17:04:17,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:04:17,720 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:17,721 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:17,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-30 17:04:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:17,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1579467459, now seen corresponding path program 1 times [2021-08-30 17:04:17,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:17,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028278771] [2021-08-30 17:04:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:17,740 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:17,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:17,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:17,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:04:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:17,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 17:04:17,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:18,050 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-08-30 17:04:18,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 13 [2021-08-30 17:04:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:18,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:18,159 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:18,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028278771] [2021-08-30 17:04:18,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028278771] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:18,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:18,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:04:18,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137437349] [2021-08-30 17:04:18,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:04:18,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:18,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:04:18,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:18,193 INFO L87 Difference]: Start difference. First operand has 22 states, 10 states have (on average 1.7) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:18,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:18,259 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-08-30 17:04:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:04:18,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:04:18,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:18,268 INFO L225 Difference]: With dead ends: 19 [2021-08-30 17:04:18,268 INFO L226 Difference]: Without dead ends: 16 [2021-08-30 17:04:18,269 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:18,272 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.04ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:18,273 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 8 Invalid, 22 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 49.04ms Time] [2021-08-30 17:04:18,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-30 17:04:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-30 17:04:18,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-08-30 17:04:18,303 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 7 [2021-08-30 17:04:18,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:18,303 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-08-30 17:04:18,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-08-30 17:04:18,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:04:18,305 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:18,305 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:18,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:18,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:18,516 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-30 17:04:18,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:18,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1579467458, now seen corresponding path program 1 times [2021-08-30 17:04:18,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:18,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123262142] [2021-08-30 17:04:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:18,518 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:18,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:18,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:18,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:04:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:18,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:04:18,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:18,692 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:04:18,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-08-30 17:04:18,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-08-30 17:04:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:18,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:18,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:18,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123262142] [2021-08-30 17:04:18,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123262142] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:18,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:18,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-30 17:04:18,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136302568] [2021-08-30 17:04:18,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:04:18,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:18,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:04:18,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:04:18,833 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:18,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:18,902 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-08-30 17:04:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:04:18,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:04:18,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:18,903 INFO L225 Difference]: With dead ends: 15 [2021-08-30 17:04:18,903 INFO L226 Difference]: Without dead ends: 15 [2021-08-30 17:04:18,904 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.96ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:04:18,905 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 62.23ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:18,905 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 29 Unknown, 0 Unchecked, 1.24ms Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 10 Unchecked, 62.23ms Time] [2021-08-30 17:04:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-30 17:04:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-30 17:04:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-08-30 17:04:18,908 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 7 [2021-08-30 17:04:18,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:18,908 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-08-30 17:04:18,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-08-30 17:04:18,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-30 17:04:18,909 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:18,909 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:18,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:19,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:19,110 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-30 17:04:19,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:19,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1744772257, now seen corresponding path program 1 times [2021-08-30 17:04:19,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:19,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249373390] [2021-08-30 17:04:19,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:19,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:19,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:19,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:19,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:04:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:19,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:04:19,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:19,262 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:04:19,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-08-30 17:04:19,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-08-30 17:04:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:19,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:19,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:19,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249373390] [2021-08-30 17:04:19,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249373390] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:19,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:19,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-30 17:04:19,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093134786] [2021-08-30 17:04:19,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:04:19,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:04:19,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:04:19,428 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:19,470 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-08-30 17:04:19,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:04:19,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-30 17:04:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:19,471 INFO L225 Difference]: With dead ends: 14 [2021-08-30 17:04:19,471 INFO L226 Difference]: Without dead ends: 14 [2021-08-30 17:04:19,472 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.47ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:04:19,472 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 37.41ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:19,473 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 16 Unknown, 0 Unchecked, 1.49ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 3 Unchecked, 37.41ms Time] [2021-08-30 17:04:19,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-08-30 17:04:19,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-08-30 17:04:19,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:19,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-08-30 17:04:19,475 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 9 [2021-08-30 17:04:19,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:19,475 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-08-30 17:04:19,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-08-30 17:04:19,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:04:19,476 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:19,476 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:19,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:19,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:19,685 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-30 17:04:19,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:19,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1746634866, now seen corresponding path program 1 times [2021-08-30 17:04:19,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:19,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365198072] [2021-08-30 17:04:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:19,686 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:19,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:19,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:19,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:04:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:19,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 17:04:19,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:19,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:19,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-08-30 17:04:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:19,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:19,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365198072] [2021-08-30 17:04:19,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365198072] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:19,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:19,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-30 17:04:19,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061789066] [2021-08-30 17:04:19,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:04:19,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:04:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:04:19,966 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:20,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:20,031 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-08-30 17:04:20,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:04:20,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 17:04:20,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:20,032 INFO L225 Difference]: With dead ends: 13 [2021-08-30 17:04:20,032 INFO L226 Difference]: Without dead ends: 13 [2021-08-30 17:04:20,033 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 57.31ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:04:20,033 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.15ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:20,033 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 22 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 61.15ms Time] [2021-08-30 17:04:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-30 17:04:20,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-30 17:04:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-08-30 17:04:20,036 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2021-08-30 17:04:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:20,036 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-08-30 17:04:20,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-08-30 17:04:20,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 17:04:20,037 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:20,037 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:20,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:20,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:20,246 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-08-30 17:04:20,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:20,246 INFO L82 PathProgramCache]: Analyzing trace with hash -816106894, now seen corresponding path program 1 times [2021-08-30 17:04:20,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:20,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118438104] [2021-08-30 17:04:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:20,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:20,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:20,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:20,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:04:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:04:20,416 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 17:04:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:04:20,524 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-30 17:04:20,524 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 17:04:20,525 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2021-08-30 17:04:20,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (5 of 7 remaining) [2021-08-30 17:04:20,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (4 of 7 remaining) [2021-08-30 17:04:20,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (3 of 7 remaining) [2021-08-30 17:04:20,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (2 of 7 remaining) [2021-08-30 17:04:20,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (1 of 7 remaining) [2021-08-30 17:04:20,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (0 of 7 remaining) [2021-08-30 17:04:20,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:20,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:20,733 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:04:20,740 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 17:04:20,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:04:20 BoogieIcfgContainer [2021-08-30 17:04:20,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:04:20,749 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:04:20,750 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:04:20,750 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:04:20,750 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:17" (3/4) ... [2021-08-30 17:04:20,753 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:04:20,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:04:20,753 INFO L158 Benchmark]: Toolchain (without parser) took 4076.89ms. Allocated memory was 52.4MB in the beginning and 79.7MB in the end (delta: 27.3MB). Free memory was 28.5MB in the beginning and 46.4MB in the end (delta: -17.9MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2021-08-30 17:04:20,754 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 52.4MB. Free memory was 34.7MB in the beginning and 34.7MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:04:20,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.60ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 28.3MB in the beginning and 41.1MB in the end (delta: -12.8MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-08-30 17:04:20,754 INFO L158 Benchmark]: Boogie Preprocessor took 84.33ms. Allocated memory is still 65.0MB. Free memory was 41.1MB in the beginning and 38.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 17:04:20,755 INFO L158 Benchmark]: RCFGBuilder took 444.98ms. Allocated memory is still 65.0MB. Free memory was 38.4MB in the beginning and 32.1MB in the end (delta: 6.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-08-30 17:04:20,755 INFO L158 Benchmark]: TraceAbstraction took 3101.66ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 31.6MB in the beginning and 46.7MB in the end (delta: -15.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:04:20,755 INFO L158 Benchmark]: Witness Printer took 3.44ms. Allocated memory is still 79.7MB. Free memory was 46.7MB in the beginning and 46.4MB in the end (delta: 343.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:04:20,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 52.4MB. Free memory was 34.7MB in the beginning and 34.7MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 437.60ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 28.3MB in the beginning and 41.1MB in the end (delta: -12.8MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.33ms. Allocated memory is still 65.0MB. Free memory was 41.1MB in the beginning and 38.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 444.98ms. Allocated memory is still 65.0MB. Free memory was 38.4MB in the beginning and 32.1MB in the end (delta: 6.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3101.66ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 31.6MB in the beginning and 46.7MB in the end (delta: -15.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.44ms. Allocated memory is still 79.7MB. Free memory was 46.7MB in the beginning and 46.4MB in the end (delta: 343.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 523]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 523. Possible FailurePath: [L525-L532] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L533] data.p0 = malloc(37U) VAL [data={4099:0}, malloc(37U)={1:0}] [L534] data.str.p2 = &data VAL [data={4099:0}] [L535] data.str.c[1] = sizeof data.str.p1 VAL [data={4099:0}] [L536] return 0; [L536] return 0; VAL [\result=0] - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 46 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 3035.58ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 10.10ms, AutomataDifference: 296.96ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.08ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 209.83ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 179.80ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 13 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 13 mSDtfsCounter, 73 mSolverCounterSat, 4.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 120.01ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 22.77ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 59.84ms SsaConstructionTime, 151.15ms SatisfiabilityAnalysisTime, 790.94ms InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 58 ConstructedInterpolants, 4 QuantifiedInterpolants, 252 SizeOfPredicates, 10 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:04:20,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...