./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.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 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:05:46,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:05:46,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:05:46,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:05:46,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:05:46,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:05:46,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:05:46,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:05:46,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:05:46,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:05:46,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:05:46,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:05:46,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:05:46,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:05:46,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:05:46,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:05:46,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:05:46,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:05:46,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:05:46,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:05:46,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:05:46,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:05:46,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:05:46,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:05:46,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:05:46,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:05:46,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:05:46,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:05:46,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:05:46,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:05:46,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:05:46,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:05:46,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:05:46,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:05:46,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:05:46,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:05:46,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:05:46,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:05:46,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:05:46,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:05:46,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:05:46,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:05:46,475 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:05:46,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:05:46,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:05:46,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:05:46,477 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:05:46,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:05:46,478 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:05:46,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:05:46,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:05:46,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:05:46,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:05:46,479 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:05:46,480 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:05:46,480 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:05:46,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:05:46,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:05:46,481 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:05:46,481 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:05:46,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:05:46,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:05:46,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:05:46,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:05:46,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:05:46,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:05:46,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:05:46,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:05:46,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:05:46,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:05:46,484 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 -> 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 [2019-11-28 20:05:46,793 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:05:46,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:05:46,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:05:46,820 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:05:46,820 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:05:46,823 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2019-11-28 20:05:46,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b61a5a68/052f562f32394afca9b8fcc5fa5d53b7/FLAG8348a861e [2019-11-28 20:05:47,463 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:05:47,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2019-11-28 20:05:47,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b61a5a68/052f562f32394afca9b8fcc5fa5d53b7/FLAG8348a861e [2019-11-28 20:05:47,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b61a5a68/052f562f32394afca9b8fcc5fa5d53b7 [2019-11-28 20:05:47,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:05:47,763 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:05:47,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:05:47,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:05:47,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:05:47,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:05:47" (1/1) ... [2019-11-28 20:05:47,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777bc9c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:47, skipping insertion in model container [2019-11-28 20:05:47,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:05:47" (1/1) ... [2019-11-28 20:05:47,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:05:47,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:05:48,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:05:48,363 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:05:48,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:05:48,467 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:05:48,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:48 WrapperNode [2019-11-28 20:05:48,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:05:48,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:05:48,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:05:48,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:05:48,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:48" (1/1) ... [2019-11-28 20:05:48,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:48" (1/1) ... [2019-11-28 20:05:48,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:48" (1/1) ... [2019-11-28 20:05:48,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:48" (1/1) ... [2019-11-28 20:05:48,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:48" (1/1) ... [2019-11-28 20:05:48,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:48" (1/1) ... [2019-11-28 20:05:48,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:48" (1/1) ... [2019-11-28 20:05:48,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:05:48,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:05:48,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:05:48,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:05:48,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:48" (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 20:05:48,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:05:48,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:05:48,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:05:48,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:05:48,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:05:48,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:05:48,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:05:48,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:05:48,600 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:05:48,600 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:05:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:05:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:05:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:05:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:05:48,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:05:48,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:05:48,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:05:48,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:05:48,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:05:48,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:05:48,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:05:48,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:05:48,603 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:05:48,604 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:05:48,604 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:05:48,604 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:05:48,604 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:05:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:05:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:05:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:05:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:05:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:05:48,606 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:05:48,606 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:05:48,606 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:05:48,606 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:05:48,606 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:05:48,607 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:05:48,607 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:05:48,607 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:05:48,607 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:05:48,607 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:05:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:05:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:05:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:05:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:05:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:05:48,609 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:05:48,609 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:05:48,609 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:05:48,609 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:05:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:05:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:05:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:05:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:05:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:05:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:05:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:05:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:05:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:05:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:05:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:05:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:05:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:05:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:05:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:05:48,613 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:05:48,613 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:05:48,613 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:05:48,613 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:05:48,614 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:05:48,614 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:05:48,614 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:05:48,614 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:05:48,614 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:05:48,615 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:05:48,615 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:05:48,615 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:05:48,615 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:05:48,615 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:05:48,616 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:05:48,616 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:05:48,616 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:05:48,616 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:05:48,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:05:48,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:05:48,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:05:48,617 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:05:48,617 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:05:48,618 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:05:48,618 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:05:48,618 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:05:48,618 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:05:48,618 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:05:48,619 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:05:48,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:05:48,619 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:05:48,619 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:05:48,619 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:05:48,620 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:05:48,620 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:05:48,620 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:05:48,620 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:05:48,620 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:05:48,621 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:05:48,621 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:05:48,621 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:05:48,621 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:05:48,621 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:05:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:05:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:05:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:05:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:05:48,623 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:05:48,623 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:05:48,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:05:48,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-28 20:05:48,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:05:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 20:05:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:05:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:05:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:05:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:05:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:05:49,242 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:05:49,242 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-28 20:05:49,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:05:49 BoogieIcfgContainer [2019-11-28 20:05:49,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:05:49,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:05:49,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:05:49,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:05:49,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:05:47" (1/3) ... [2019-11-28 20:05:49,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c31bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:05:49, skipping insertion in model container [2019-11-28 20:05:49,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:48" (2/3) ... [2019-11-28 20:05:49,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c31bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:05:49, skipping insertion in model container [2019-11-28 20:05:49,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:05:49" (3/3) ... [2019-11-28 20:05:49,260 INFO L109 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe.i [2019-11-28 20:05:49,272 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:05:49,283 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2019-11-28 20:05:49,297 INFO L249 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2019-11-28 20:05:49,321 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:05:49,321 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:05:49,321 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:05:49,321 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:05:49,332 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:05:49,333 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:05:49,333 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:05:49,333 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:05:49,353 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2019-11-28 20:05:49,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:05:49,368 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:49,369 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:49,369 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:05:49,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:49,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1096953401, now seen corresponding path program 1 times [2019-11-28 20:05:49,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:49,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032656239] [2019-11-28 20:05:49,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:49,639 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 20:05:49,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032656239] [2019-11-28 20:05:49,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:49,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:05:49,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691797515] [2019-11-28 20:05:49,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:05:49,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:49,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:05:49,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:05:49,662 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2019-11-28 20:05:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:49,899 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2019-11-28 20:05:49,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:05:49,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 20:05:49,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:49,919 INFO L225 Difference]: With dead ends: 66 [2019-11-28 20:05:49,919 INFO L226 Difference]: Without dead ends: 63 [2019-11-28 20:05:49,923 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:05:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-28 20:05:49,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-28 20:05:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-28 20:05:49,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2019-11-28 20:05:49,979 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 11 [2019-11-28 20:05:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:49,980 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2019-11-28 20:05:49,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:05:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2019-11-28 20:05:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:05:49,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:49,982 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:49,982 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:05:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:49,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893819, now seen corresponding path program 1 times [2019-11-28 20:05:49,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:49,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114799600] [2019-11-28 20:05:49,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:50,157 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 20:05:50,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114799600] [2019-11-28 20:05:50,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:50,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:05:50,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390263207] [2019-11-28 20:05:50,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:05:50,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:50,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:05:50,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:05:50,162 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 6 states. [2019-11-28 20:05:50,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:50,371 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2019-11-28 20:05:50,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:05:50,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 20:05:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:50,373 INFO L225 Difference]: With dead ends: 68 [2019-11-28 20:05:50,373 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 20:05:50,375 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:05:50,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 20:05:50,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2019-11-28 20:05:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-28 20:05:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2019-11-28 20:05:50,386 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 11 [2019-11-28 20:05:50,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:50,386 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2019-11-28 20:05:50,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:05:50,386 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2019-11-28 20:05:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:05:50,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:50,387 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:50,387 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:05:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:50,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893820, now seen corresponding path program 1 times [2019-11-28 20:05:50,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:50,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255656844] [2019-11-28 20:05:50,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:50,445 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 20:05:50,445 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255656844] [2019-11-28 20:05:50,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:50,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:05:50,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517176991] [2019-11-28 20:05:50,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:05:50,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:50,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:05:50,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:05:50,450 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 4 states. [2019-11-28 20:05:50,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:50,585 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2019-11-28 20:05:50,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:05:50,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 20:05:50,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:50,587 INFO L225 Difference]: With dead ends: 60 [2019-11-28 20:05:50,587 INFO L226 Difference]: Without dead ends: 60 [2019-11-28 20:05:50,589 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 20:05:50,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-28 20:05:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-11-28 20:05:50,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-28 20:05:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2019-11-28 20:05:50,603 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 11 [2019-11-28 20:05:50,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:50,603 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2019-11-28 20:05:50,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:05:50,607 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2019-11-28 20:05:50,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 20:05:50,608 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:50,608 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:50,608 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:05:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:50,609 INFO L82 PathProgramCache]: Analyzing trace with hash -2080946104, now seen corresponding path program 1 times [2019-11-28 20:05:50,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:50,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609871011] [2019-11-28 20:05:50,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:50,751 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 20:05:50,752 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609871011] [2019-11-28 20:05:50,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458323590] [2019-11-28 20:05:50,753 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 20:05:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:50,865 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:05:50,871 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:50,931 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 20:05:50,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:05:50,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-11-28 20:05:50,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370329611] [2019-11-28 20:05:50,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:05:50,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:50,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:05:50,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:05:50,936 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 5 states. [2019-11-28 20:05:50,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:50,986 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2019-11-28 20:05:50,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:05:50,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-28 20:05:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:50,988 INFO L225 Difference]: With dead ends: 109 [2019-11-28 20:05:50,988 INFO L226 Difference]: Without dead ends: 109 [2019-11-28 20:05:50,990 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 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 20:05:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-28 20:05:50,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 66. [2019-11-28 20:05:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-28 20:05:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2019-11-28 20:05:50,998 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 15 [2019-11-28 20:05:50,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:50,998 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2019-11-28 20:05:50,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:05:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2019-11-28 20:05:50,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 20:05:50,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:51,000 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:51,203 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:51,204 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:05:51,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:51,205 INFO L82 PathProgramCache]: Analyzing trace with hash -591541108, now seen corresponding path program 1 times [2019-11-28 20:05:51,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:51,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54232652] [2019-11-28 20:05:51,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:51,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54232652] [2019-11-28 20:05:51,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496178516] [2019-11-28 20:05:51,393 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 20:05:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:51,495 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 20:05:51,497 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:51,544 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2019-11-28 20:05:51,544 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:05:51,554 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:05:51,557 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:05:51,558 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:21 [2019-11-28 20:05:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:51,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:05:51,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2019-11-28 20:05:51,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928884587] [2019-11-28 20:05:51,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 20:05:51,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:51,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 20:05:51,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:05:51,599 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 10 states. [2019-11-28 20:05:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:52,138 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2019-11-28 20:05:52,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 20:05:52,138 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-11-28 20:05:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:52,140 INFO L225 Difference]: With dead ends: 123 [2019-11-28 20:05:52,140 INFO L226 Difference]: Without dead ends: 123 [2019-11-28 20:05:52,144 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-28 20:05:52,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-11-28 20:05:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 71. [2019-11-28 20:05:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-28 20:05:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2019-11-28 20:05:52,158 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 15 [2019-11-28 20:05:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:52,158 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2019-11-28 20:05:52,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 20:05:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2019-11-28 20:05:52,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 20:05:52,159 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:52,159 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:52,370 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:52,371 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:05:52,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:52,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1400887734, now seen corresponding path program 1 times [2019-11-28 20:05:52,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:52,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84905393] [2019-11-28 20:05:52,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:52,513 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 20:05:52,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84905393] [2019-11-28 20:05:52,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697227312] [2019-11-28 20:05:52,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:52,599 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 20:05:52,600 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:52,620 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2019-11-28 20:05:52,620 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:05:52,627 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:05:52,627 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:05:52,628 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2019-11-28 20:05:52,676 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 20:05:52,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:05:52,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-11-28 20:05:52,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792652555] [2019-11-28 20:05:52,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 20:05:52,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:52,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:05:52,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:05:52,679 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 8 states. [2019-11-28 20:05:52,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:52,882 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2019-11-28 20:05:52,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:05:52,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-28 20:05:52,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:52,884 INFO L225 Difference]: With dead ends: 74 [2019-11-28 20:05:52,884 INFO L226 Difference]: Without dead ends: 74 [2019-11-28 20:05:52,885 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:05:52,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-28 20:05:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2019-11-28 20:05:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-28 20:05:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2019-11-28 20:05:52,890 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 15 [2019-11-28 20:05:52,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:52,891 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2019-11-28 20:05:52,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 20:05:52,891 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2019-11-28 20:05:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 20:05:52,892 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:52,892 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:53,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:53,097 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:05:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:53,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1665502603, now seen corresponding path program 1 times [2019-11-28 20:05:53,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:53,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83700556] [2019-11-28 20:05:53,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:53,157 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 20:05:53,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83700556] [2019-11-28 20:05:53,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:53,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:05:53,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129814564] [2019-11-28 20:05:53,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:05:53,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:53,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:05:53,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:05:53,159 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 5 states. [2019-11-28 20:05:53,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:53,306 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2019-11-28 20:05:53,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:05:53,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-28 20:05:53,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:53,307 INFO L225 Difference]: With dead ends: 80 [2019-11-28 20:05:53,308 INFO L226 Difference]: Without dead ends: 80 [2019-11-28 20:05:53,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:05:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-28 20:05:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2019-11-28 20:05:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-28 20:05:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2019-11-28 20:05:53,318 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 17 [2019-11-28 20:05:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:53,319 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2019-11-28 20:05:53,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:05:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2019-11-28 20:05:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 20:05:53,319 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:53,320 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:53,320 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:05:53,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:53,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1665502644, now seen corresponding path program 1 times [2019-11-28 20:05:53,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:53,321 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123660647] [2019-11-28 20:05:53,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:53,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123660647] [2019-11-28 20:05:53,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861407340] [2019-11-28 20:05:53,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:53,505 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 20:05:53,507 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:53,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:05:53,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2019-11-28 20:05:53,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715853325] [2019-11-28 20:05:53,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 20:05:53,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:53,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 20:05:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:05:53,563 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 10 states. [2019-11-28 20:05:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:53,786 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2019-11-28 20:05:53,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:05:53,787 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-28 20:05:53,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:53,787 INFO L225 Difference]: With dead ends: 81 [2019-11-28 20:05:53,788 INFO L226 Difference]: Without dead ends: 81 [2019-11-28 20:05:53,788 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:05:53,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-11-28 20:05:53,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2019-11-28 20:05:53,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-28 20:05:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2019-11-28 20:05:53,801 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 17 [2019-11-28 20:05:53,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:53,802 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2019-11-28 20:05:53,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 20:05:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2019-11-28 20:05:53,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 20:05:53,804 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:53,804 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] [2019-11-28 20:05:54,008 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:54,009 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:05:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:54,009 INFO L82 PathProgramCache]: Analyzing trace with hash 94437838, now seen corresponding path program 1 times [2019-11-28 20:05:54,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:54,010 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535794301] [2019-11-28 20:05:54,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:05:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:05:54,094 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:05:54,094 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:05:54,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:05:54 BoogieIcfgContainer [2019-11-28 20:05:54,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:05:54,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:05:54,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:05:54,130 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:05:54,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:05:49" (3/4) ... [2019-11-28 20:05:54,133 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:05:54,184 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:05:54,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:05:54,186 INFO L168 Benchmark]: Toolchain (without parser) took 6423.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.0 MB). Free memory was 956.3 MB in the beginning and 993.0 MB in the end (delta: -36.7 MB). Peak memory consumption was 157.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:54,186 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:05:54,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -134.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:54,188 INFO L168 Benchmark]: Boogie Preprocessor took 71.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:54,188 INFO L168 Benchmark]: RCFGBuilder took 703.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:54,189 INFO L168 Benchmark]: TraceAbstraction took 4882.93 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 84.4 MB). Free memory was 1.0 GB in the beginning and 993.0 MB in the end (delta: 38.9 MB). Peak memory consumption was 123.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:54,189 INFO L168 Benchmark]: Witness Printer took 54.53 ms. Allocated memory is still 1.2 GB. Free memory is still 993.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:05:54,192 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 704.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -134.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 71.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 703.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4882.93 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 84.4 MB). Free memory was 1.0 GB in the beginning and 993.0 MB in the end (delta: 38.9 MB). Peak memory consumption was 123.3 MB. Max. memory is 11.5 GB. * Witness Printer took 54.53 ms. Allocated memory is still 1.2 GB. Free memory is still 993.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 529]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L518] COND FALSE !(length % 2 == 0) VAL [length=1] [L519] int *arr = __builtin_alloca (length*sizeof(int)); [L521] int i = 0; VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=0, length=1] [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() VAL [__builtin_alloca (length*sizeof(int))={2:0}, __VERIFIER_nondet_int()=1, arr={2:0}, i=0, length=1] [L521] i++ VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, length=1] [L521] COND FALSE !(i < length) VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, length=1] [L526] i=0 VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=0, i=1, length=1] [L526] COND TRUE i