./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9f95b6c839057502038c8f9c89c369852ea0865 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:09:17,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:09:17,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:09:17,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:09:17,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:09:17,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:09:17,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:09:17,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:09:17,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:09:17,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:09:17,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:09:17,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:09:17,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:09:17,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:09:17,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:09:17,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:09:17,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:09:17,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:09:17,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:09:17,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:09:17,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:09:17,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:09:17,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:09:17,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:09:17,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:09:17,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:09:17,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:09:17,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:09:17,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:09:17,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:09:17,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:09:17,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:09:17,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:09:17,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:09:17,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:09:17,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:09:17,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:09:17,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:09:17,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:09:17,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:09:17,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:09:17,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:09:17,474 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:09:17,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:09:17,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:09:17,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:09:17,477 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:09:17,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:09:17,477 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:09:17,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:09:17,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:09:17,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:09:17,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:09:17,479 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:09:17,479 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:09:17,479 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:09:17,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:09:17,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:09:17,480 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:09:17,481 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:09:17,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:09:17,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:09:17,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:09:17,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:09:17,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:09:17,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:09:17,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:09:17,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:09:17,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:09:17,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:09:17,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f95b6c839057502038c8f9c89c369852ea0865 [2019-11-28 20:09:17,777 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:09:17,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:09:17,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:09:17,797 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:09:17,797 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:09:17,799 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2019-11-28 20:09:17,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c350f2ae/93646cfd069b438fbb9eb19011e6d9d2/FLAGb551c14ea [2019-11-28 20:09:18,430 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:09:18,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2019-11-28 20:09:18,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c350f2ae/93646cfd069b438fbb9eb19011e6d9d2/FLAGb551c14ea [2019-11-28 20:09:18,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c350f2ae/93646cfd069b438fbb9eb19011e6d9d2 [2019-11-28 20:09:18,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:09:18,711 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:09:18,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:09:18,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:09:18,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:09:18,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:09:18" (1/1) ... [2019-11-28 20:09:18,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600cef8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:09:18, skipping insertion in model container [2019-11-28 20:09:18,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:09:18" (1/1) ... [2019-11-28 20:09:18,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:09:18,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:09:19,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:09:19,268 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:09:19,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:09:19,369 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:09:19,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:09:19 WrapperNode [2019-11-28 20:09:19,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:09:19,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:09:19,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:09:19,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:09:19,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:09:19" (1/1) ... [2019-11-28 20:09:19,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:09:19" (1/1) ... [2019-11-28 20:09:19,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:09:19" (1/1) ... [2019-11-28 20:09:19,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:09:19" (1/1) ... [2019-11-28 20:09:19,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:09:19" (1/1) ... [2019-11-28 20:09:19,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:09:19" (1/1) ... [2019-11-28 20:09:19,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:09:19" (1/1) ... [2019-11-28 20:09:19,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:09:19,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:09:19,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:09:19,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:09:19,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:09:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:09:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:09:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:09:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:09:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:09:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:09:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:09:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:09:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-28 20:09:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:09:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 20:09:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:09:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:09:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:09:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:09:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:09:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:09:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:09:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:09:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:09:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:09:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:09:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:09:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:09:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:09:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:09:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:09:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:09:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:09:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:09:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:09:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:09:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:09:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:09:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:09:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:09:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:09:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:09:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:09:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:09:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:09:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:09:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:09:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:09:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:09:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:09:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:09:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:09:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:09:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:09:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:09:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:09:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:09:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:09:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:09:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:09:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:09:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:09:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:09:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:09:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:09:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:09:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:09:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:09:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:09:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:09:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:09:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:09:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:09:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:09:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:09:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:09:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:09:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:09:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:09:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:09:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:09:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:09:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:09:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:09:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:09:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:09:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:09:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:09:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:09:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:09:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:09:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:09:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:09:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:09:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:09:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:09:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:09:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:09:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:09:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:09:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:09:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:09:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:09:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:09:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:09:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:09:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:09:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:09:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:09:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:09:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:09:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:09:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:09:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:09:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:09:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:09:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:09:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:09:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:09:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:09:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:09:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:09:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:09:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-28 20:09:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:09:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:09:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 20:09:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:09:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:09:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:09:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:09:20,095 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:09:20,096 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-28 20:09:20,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:09:20 BoogieIcfgContainer [2019-11-28 20:09:20,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:09:20,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:09:20,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:09:20,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:09:20,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:09:18" (1/3) ... [2019-11-28 20:09:20,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df04ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:09:20, skipping insertion in model container [2019-11-28 20:09:20,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:09:19" (2/3) ... [2019-11-28 20:09:20,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df04ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:09:20, skipping insertion in model container [2019-11-28 20:09:20,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:09:20" (3/3) ... [2019-11-28 20:09:20,106 INFO L109 eAbstractionObserver]: Analyzing ICFG 960521-1_1-1.i [2019-11-28 20:09:20,116 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:09:20,125 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2019-11-28 20:09:20,138 INFO L249 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2019-11-28 20:09:20,159 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:09:20,160 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:09:20,160 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:09:20,160 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:09:20,161 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:09:20,161 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:09:20,161 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:09:20,161 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:09:20,179 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2019-11-28 20:09:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:09:20,188 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:09:20,188 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:09:20,189 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:09:20,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:09:20,194 INFO L82 PathProgramCache]: Analyzing trace with hash 583874427, now seen corresponding path program 1 times [2019-11-28 20:09:20,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:09:20,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802613994] [2019-11-28 20:09:20,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:09:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:09:20,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802613994] [2019-11-28 20:09:20,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:09:20,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:09:20,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100556731] [2019-11-28 20:09:20,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:09:20,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:09:20,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:09:20,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:09:20,448 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2019-11-28 20:09:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:09:20,642 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2019-11-28 20:09:20,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:09:20,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 20:09:20,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:09:20,654 INFO L225 Difference]: With dead ends: 62 [2019-11-28 20:09:20,654 INFO L226 Difference]: Without dead ends: 59 [2019-11-28 20:09:20,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:09:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-28 20:09:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-28 20:09:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-28 20:09:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2019-11-28 20:09:20,697 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 9 [2019-11-28 20:09:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:09:20,697 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2019-11-28 20:09:20,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:09:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2019-11-28 20:09:20,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:09:20,698 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:09:20,699 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:09:20,699 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:09:20,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:09:20,700 INFO L82 PathProgramCache]: Analyzing trace with hash 920023712, now seen corresponding path program 1 times [2019-11-28 20:09:20,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:09:20,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82794631] [2019-11-28 20:09:20,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:09:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:09:20,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82794631] [2019-11-28 20:09:20,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:09:20,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:09:20,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561917032] [2019-11-28 20:09:20,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:09:20,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:09:20,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:09:20,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:09:20,824 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 4 states. [2019-11-28 20:09:21,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:09:21,007 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2019-11-28 20:09:21,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:09:21,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 20:09:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:09:21,009 INFO L225 Difference]: With dead ends: 58 [2019-11-28 20:09:21,009 INFO L226 Difference]: Without dead ends: 58 [2019-11-28 20:09:21,010 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:09:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-28 20:09:21,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-11-28 20:09:21,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-28 20:09:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2019-11-28 20:09:21,018 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 10 [2019-11-28 20:09:21,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:09:21,019 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2019-11-28 20:09:21,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:09:21,019 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2019-11-28 20:09:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:09:21,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:09:21,020 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:09:21,020 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:09:21,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:09:21,021 INFO L82 PathProgramCache]: Analyzing trace with hash 920023713, now seen corresponding path program 1 times [2019-11-28 20:09:21,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:09:21,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72170550] [2019-11-28 20:09:21,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:09:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:09:21,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72170550] [2019-11-28 20:09:21,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:09:21,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:09:21,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665977090] [2019-11-28 20:09:21,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:09:21,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:09:21,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:09:21,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:09:21,110 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 5 states. [2019-11-28 20:09:21,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:09:21,288 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2019-11-28 20:09:21,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:09:21,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-28 20:09:21,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:09:21,290 INFO L225 Difference]: With dead ends: 57 [2019-11-28 20:09:21,291 INFO L226 Difference]: Without dead ends: 57 [2019-11-28 20:09:21,291 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:09:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-28 20:09:21,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-11-28 20:09:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-28 20:09:21,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2019-11-28 20:09:21,299 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 10 [2019-11-28 20:09:21,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:09:21,300 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2019-11-28 20:09:21,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:09:21,300 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2019-11-28 20:09:21,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 20:09:21,301 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:09:21,302 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:09:21,302 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:09:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:09:21,303 INFO L82 PathProgramCache]: Analyzing trace with hash 944956531, now seen corresponding path program 1 times [2019-11-28 20:09:21,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:09:21,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64908788] [2019-11-28 20:09:21,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:09:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:09:21,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64908788] [2019-11-28 20:09:21,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:09:21,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:09:21,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102219921] [2019-11-28 20:09:21,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:09:21,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:09:21,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:09:21,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:09:21,411 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 4 states. [2019-11-28 20:09:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:09:21,571 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2019-11-28 20:09:21,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:09:21,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-28 20:09:21,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:09:21,573 INFO L225 Difference]: With dead ends: 54 [2019-11-28 20:09:21,573 INFO L226 Difference]: Without dead ends: 54 [2019-11-28 20:09:21,574 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:09:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-28 20:09:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-28 20:09:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-28 20:09:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2019-11-28 20:09:21,589 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 15 [2019-11-28 20:09:21,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:09:21,589 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2019-11-28 20:09:21,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:09:21,590 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2019-11-28 20:09:21,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 20:09:21,591 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:09:21,591 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:09:21,594 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:09:21,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:09:21,596 INFO L82 PathProgramCache]: Analyzing trace with hash 944956532, now seen corresponding path program 1 times [2019-11-28 20:09:21,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:09:21,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097681467] [2019-11-28 20:09:21,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:09:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:09:21,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097681467] [2019-11-28 20:09:21,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:09:21,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 20:09:21,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382324673] [2019-11-28 20:09:21,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:09:21,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:09:21,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:09:21,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:09:21,824 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 7 states. [2019-11-28 20:09:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:09:22,113 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2019-11-28 20:09:22,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:09:22,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-28 20:09:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:09:22,118 INFO L225 Difference]: With dead ends: 62 [2019-11-28 20:09:22,118 INFO L226 Difference]: Without dead ends: 62 [2019-11-28 20:09:22,119 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:09:22,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-28 20:09:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2019-11-28 20:09:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-28 20:09:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2019-11-28 20:09:22,126 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 15 [2019-11-28 20:09:22,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:09:22,126 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2019-11-28 20:09:22,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:09:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2019-11-28 20:09:22,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:09:22,127 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:09:22,128 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:09:22,129 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:09:22,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:09:22,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1984403550, now seen corresponding path program 1 times [2019-11-28 20:09:22,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:09:22,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129549320] [2019-11-28 20:09:22,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:09:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:09:22,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129549320] [2019-11-28 20:09:22,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222557631] [2019-11-28 20:09:22,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:09:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:22,350 INFO L264 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:09:22,358 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:09:22,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:09:22,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:09:22,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-11-28 20:09:22,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570755984] [2019-11-28 20:09:22,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:09:22,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:09:22,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:09:22,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:09:22,415 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 5 states. [2019-11-28 20:09:22,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:09:22,477 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2019-11-28 20:09:22,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:09:22,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-28 20:09:22,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:09:22,482 INFO L225 Difference]: With dead ends: 96 [2019-11-28 20:09:22,482 INFO L226 Difference]: Without dead ends: 96 [2019-11-28 20:09:22,483 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:09:22,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-28 20:09:22,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 69. [2019-11-28 20:09:22,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-28 20:09:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2019-11-28 20:09:22,491 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 18 [2019-11-28 20:09:22,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:09:22,492 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2019-11-28 20:09:22,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:09:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2019-11-28 20:09:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:09:22,493 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:09:22,493 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:09:22,697 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:09:22,698 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:09:22,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:09:22,699 INFO L82 PathProgramCache]: Analyzing trace with hash 813250499, now seen corresponding path program 1 times [2019-11-28 20:09:22,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:09:22,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917539765] [2019-11-28 20:09:22,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:09:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 20:09:22,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917539765] [2019-11-28 20:09:22,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196756844] [2019-11-28 20:09:22,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:09:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:23,023 INFO L264 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-28 20:09:23,026 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:09:23,085 INFO L430 ElimStorePlain]: Different costs {0=[|v_#length_14|], 1=[|v_#valid_32|]} [2019-11-28 20:09:23,096 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 20:09:23,107 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2019-11-28 20:09:23,108 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:09:23,119 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:09:23,137 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-28 20:09:23,138 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 20:09:23,145 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:09:23,150 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 20:09:23,150 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:28, output treesize:33 [2019-11-28 20:09:23,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:09:23,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:09:23,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-28 20:09:23,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773626422] [2019-11-28 20:09:23,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 20:09:23,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:09:23,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 20:09:23,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:09:23,261 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 12 states. [2019-11-28 20:09:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:09:24,404 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2019-11-28 20:09:24,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 20:09:24,405 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2019-11-28 20:09:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:09:24,406 INFO L225 Difference]: With dead ends: 111 [2019-11-28 20:09:24,406 INFO L226 Difference]: Without dead ends: 111 [2019-11-28 20:09:24,407 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-11-28 20:09:24,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-11-28 20:09:24,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 71. [2019-11-28 20:09:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-28 20:09:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2019-11-28 20:09:24,415 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 20 [2019-11-28 20:09:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:09:24,415 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2019-11-28 20:09:24,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 20:09:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2019-11-28 20:09:24,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 20:09:24,416 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:09:24,417 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:09:24,621 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:09:24,622 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:09:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:09:24,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1526472291, now seen corresponding path program 1 times [2019-11-28 20:09:24,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:09:24,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152971461] [2019-11-28 20:09:24,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:09:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:09:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:09:24,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152971461] [2019-11-28 20:09:24,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:09:24,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:09:24,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695860574] [2019-11-28 20:09:24,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:09:24,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:09:24,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:09:24,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:09:24,730 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 5 states. [2019-11-28 20:09:24,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:09:24,935 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2019-11-28 20:09:24,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 20:09:24,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-28 20:09:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:09:24,937 INFO L225 Difference]: With dead ends: 69 [2019-11-28 20:09:24,937 INFO L226 Difference]: Without dead ends: 69 [2019-11-28 20:09:24,938 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:09:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-28 20:09:24,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2019-11-28 20:09:24,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-28 20:09:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2019-11-28 20:09:24,945 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 22 [2019-11-28 20:09:24,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:09:24,945 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2019-11-28 20:09:24,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:09:24,946 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2019-11-28 20:09:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 20:09:24,946 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:09:24,947 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:09:24,947 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:09:24,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:09:24,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1526472292, now seen corresponding path program 1 times [2019-11-28 20:09:24,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:09:24,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545631537] [2019-11-28 20:09:24,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:09:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:09:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:09:25,047 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:09:25,047 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:09:25,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:09:25 BoogieIcfgContainer [2019-11-28 20:09:25,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:09:25,118 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:09:25,118 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:09:25,118 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:09:25,119 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:09:20" (3/4) ... [2019-11-28 20:09:25,121 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:09:25,175 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:09:25,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:09:25,178 INFO L168 Benchmark]: Toolchain (without parser) took 6466.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.0 MB). Free memory was 957.7 MB in the beginning and 960.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 212.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:09:25,178 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:09:25,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:09:25,180 INFO L168 Benchmark]: Boogie Preprocessor took 58.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:09:25,180 INFO L168 Benchmark]: RCFGBuilder took 667.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:09:25,181 INFO L168 Benchmark]: TraceAbstraction took 5019.11 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 967.8 MB in the end (delta: 101.8 MB). Peak memory consumption was 172.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:09:25,181 INFO L168 Benchmark]: Witness Printer took 58.03 ms. Allocated memory is still 1.2 GB. Free memory was 967.8 MB in the beginning and 960.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:09:25,185 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 657.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 667.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5019.11 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 967.8 MB in the end (delta: 101.8 MB). Peak memory consumption was 172.6 MB. Max. memory is 11.5 GB. * Witness Printer took 58.03 ms. Allocated memory is still 1.2 GB. Free memory was 967.8 MB in the beginning and 960.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 533]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L512] int *a, *b; [L513] int n; VAL [\old(a)=7, \old(a)=9, \old(b)=5, \old(b)=10, \old(n)=8, a={0:0}, b={0:0}, n=0] [L525] n = 1 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={0:0}, b={0:0}, n=1] [L526] COND FALSE !(__VERIFIER_nondet_int() && n < 30) [L529] a = malloc(n * sizeof(*a)) [L530] b = malloc(n * sizeof(*b)) [L531] EXPR b++ VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, b++={-2:0}, malloc(n * sizeof(*a))={-1:0}, malloc(n * sizeof(*b))={-2:0}, n=1] [L531] *b++ = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, b++={-2:0}, malloc(n * sizeof(*a))={-1:0}, malloc(n * sizeof(*b))={-2:0}, n=1] [L532] CALL foo() VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, n=1] [L517] int i; [L518] i = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L518] COND TRUE i < n VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L519] a[i] = n VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L518] i++ VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=1, n=1] [L518] COND FALSE !(i < n) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=1, n=1] [L520] i = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L520] COND FALSE !(i < n - 1) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L532] RET foo() VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, malloc(n * sizeof(*a))={-1:0}, malloc(n * sizeof(*b))={-2:0}, n=1] [L533] b[-2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 77 locations, 21 error locations. Result: UNSAFE, OverallTime: 4.8s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 348 SDtfs, 618 SDslu, 422 SDs, 0 SdLazy, 873 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 75 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 147 ConstructedInterpolants, 9 QuantifiedInterpolants, 17310 SizeOfPredicates, 7 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 9/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...