./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e28603c63113c1566dc2e06da17c63059f80486 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:31:13,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:31:13,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:31:13,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:31:13,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:31:13,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:31:13,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:31:13,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:31:13,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:31:13,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:31:13,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:31:13,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:31:13,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:31:13,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:31:13,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:31:13,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:31:13,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:31:13,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:31:13,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:31:13,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:31:13,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:31:13,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:31:13,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:31:13,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:31:13,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:31:13,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:31:13,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:31:13,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:31:13,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:31:13,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:31:13,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:31:13,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:31:13,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:31:13,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:31:13,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:31:13,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:31:13,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:31:13,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:31:13,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:31:13,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:31:13,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:31:13,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:31:13,483 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:31:13,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:31:13,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:31:13,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:31:13,490 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:31:13,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:31:13,491 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:31:13,491 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:31:13,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:31:13,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:31:13,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:31:13,492 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:31:13,493 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:31:13,493 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:31:13,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:31:13,494 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:31:13,494 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:31:13,494 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:31:13,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:31:13,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:31:13,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:31:13,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:31:13,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:31:13,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:31:13,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:31:13,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:31:13,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:31:13,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e28603c63113c1566dc2e06da17c63059f80486 [2019-11-28 02:31:13,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:31:13,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:31:13,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:31:13,865 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:31:13,865 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:31:13,866 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-11-28 02:31:13,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3c2c099f/83cfb1b403254c8597ff2dbf0c641508/FLAG3eb5d91ab [2019-11-28 02:31:14,454 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:31:14,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-11-28 02:31:14,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3c2c099f/83cfb1b403254c8597ff2dbf0c641508/FLAG3eb5d91ab [2019-11-28 02:31:14,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3c2c099f/83cfb1b403254c8597ff2dbf0c641508 [2019-11-28 02:31:14,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:31:14,793 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:31:14,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:31:14,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:31:14,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:31:14,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:14" (1/1) ... [2019-11-28 02:31:14,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e77c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:14, skipping insertion in model container [2019-11-28 02:31:14,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:14" (1/1) ... [2019-11-28 02:31:14,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:31:14,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:31:15,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:31:15,319 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:31:15,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:31:15,425 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:31:15,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15 WrapperNode [2019-11-28 02:31:15,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:31:15,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:31:15,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:31:15,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:31:15,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:31:15,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:31:15,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:31:15,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:31:15,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (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 02:31:15,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:31:15,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:31:15,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:31:15,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:31:15,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:31:15,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:31:15,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:31:15,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:31:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:31:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:31:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:31:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:31:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:31:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:31:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:31:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:31:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:31:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:31:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:31:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:31:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:31:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:31:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:31:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:31:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:31:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:31:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:31:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:31:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:31:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:31:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:31:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:31:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:31:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:31:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:31:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:31:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:31:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:31:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:31:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:31:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:31:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:31:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:31:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:31:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:31:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:31:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:31:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:31:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:31:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:31:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:31:15,580 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:31:15,580 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:31:15,580 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:31:15,580 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:31:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:31:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:31:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:31:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:31:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:31:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:31:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:31:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:31:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:31:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:31:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:31:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:31:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:31:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:31:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:31:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:31:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:31:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:31:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:31:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:31:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:31:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:31:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:31:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:31:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:31:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:31:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:31:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:31:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:31:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:31:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:31:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:31:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:31:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:31:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:31:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:31:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:31:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:31:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:31:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:31:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:31:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:31:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:31:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:31:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:31:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:31:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:31:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:31:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:31:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:31:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:31:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:31:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:31:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:31:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:31:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:31:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:31:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:31:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:31:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:31:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:31:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:31:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 02:31:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:31:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:31:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:31:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:31:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:31:16,141 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:31:16,142 INFO L297 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-28 02:31:16,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:16 BoogieIcfgContainer [2019-11-28 02:31:16,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:31:16,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:31:16,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:31:16,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:31:16,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:31:14" (1/3) ... [2019-11-28 02:31:16,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7948c86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:16, skipping insertion in model container [2019-11-28 02:31:16,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (2/3) ... [2019-11-28 02:31:16,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7948c86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:16, skipping insertion in model container [2019-11-28 02:31:16,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:16" (3/3) ... [2019-11-28 02:31:16,161 INFO L109 eAbstractionObserver]: Analyzing ICFG count_down-alloca-1.i [2019-11-28 02:31:16,172 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:31:16,189 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-11-28 02:31:16,202 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-11-28 02:31:16,225 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:31:16,225 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:31:16,225 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:31:16,226 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:31:16,226 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:31:16,226 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:31:16,226 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:31:16,226 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:31:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-28 02:31:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:31:16,250 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:16,251 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:16,251 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:16,258 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2019-11-28 02:31:16,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:16,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990094305] [2019-11-28 02:31:16,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:16,480 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 02:31:16,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990094305] [2019-11-28 02:31:16,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:16,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:31:16,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995684815] [2019-11-28 02:31:16,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:31:16,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:16,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:31:16,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:31:16,501 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-11-28 02:31:16,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:16,655 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-11-28 02:31:16,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:31:16,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 02:31:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:16,667 INFO L225 Difference]: With dead ends: 36 [2019-11-28 02:31:16,668 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 02:31:16,670 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 02:31:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 02:31:16,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-28 02:31:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-28 02:31:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-28 02:31:16,712 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2019-11-28 02:31:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:16,713 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-28 02:31:16,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:31:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-28 02:31:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:31:16,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:16,714 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:16,715 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2019-11-28 02:31:16,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:16,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526433878] [2019-11-28 02:31:16,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:16,798 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 02:31:16,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526433878] [2019-11-28 02:31:16,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:16,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:31:16,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979643349] [2019-11-28 02:31:16,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:31:16,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:16,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:31:16,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:31:16,805 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2019-11-28 02:31:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:16,901 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-11-28 02:31:16,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:31:16,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 02:31:16,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:16,903 INFO L225 Difference]: With dead ends: 29 [2019-11-28 02:31:16,903 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 02:31:16,904 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 02:31:16,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 02:31:16,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 02:31:16,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 02:31:16,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-11-28 02:31:16,911 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2019-11-28 02:31:16,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:16,912 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-11-28 02:31:16,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:31:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-11-28 02:31:16,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:31:16,913 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:16,914 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:16,914 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:16,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2019-11-28 02:31:16,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:16,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041343496] [2019-11-28 02:31:16,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:17,087 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 02:31:17,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041343496] [2019-11-28 02:31:17,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:17,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 02:31:17,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544864128] [2019-11-28 02:31:17,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:31:17,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:17,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:31:17,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:31:17,090 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 7 states. [2019-11-28 02:31:17,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:17,239 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-28 02:31:17,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:31:17,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-28 02:31:17,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:17,241 INFO L225 Difference]: With dead ends: 33 [2019-11-28 02:31:17,241 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 02:31:17,242 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:31:17,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 02:31:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-28 02:31:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-28 02:31:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-11-28 02:31:17,248 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2019-11-28 02:31:17,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:17,248 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-11-28 02:31:17,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:31:17,249 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-11-28 02:31:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 02:31:17,250 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:17,250 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:17,250 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:17,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:17,251 INFO L82 PathProgramCache]: Analyzing trace with hash 467596310, now seen corresponding path program 1 times [2019-11-28 02:31:17,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:17,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903412024] [2019-11-28 02:31:17,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:31:17,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903412024] [2019-11-28 02:31:17,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801654436] [2019-11-28 02:31:17,391 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 02:31:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:17,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:31:17,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:31:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:31:17,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 02:31:17,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2019-11-28 02:31:17,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367707189] [2019-11-28 02:31:17,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:31:17,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:17,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:31:17,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:31:17,611 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2019-11-28 02:31:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:17,661 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2019-11-28 02:31:17,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:31:17,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-28 02:31:17,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:17,665 INFO L225 Difference]: With dead ends: 54 [2019-11-28 02:31:17,665 INFO L226 Difference]: Without dead ends: 54 [2019-11-28 02:31:17,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:31:17,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-28 02:31:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-11-28 02:31:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 02:31:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-11-28 02:31:17,676 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 16 [2019-11-28 02:31:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:17,677 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-11-28 02:31:17,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:31:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-11-28 02:31:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 02:31:17,678 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:17,678 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:17,880 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:31:17,881 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:17,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:17,882 INFO L82 PathProgramCache]: Analyzing trace with hash 74569300, now seen corresponding path program 1 times [2019-11-28 02:31:17,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:17,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671798797] [2019-11-28 02:31:17,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:31:18,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671798797] [2019-11-28 02:31:18,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292918110] [2019-11-28 02:31:18,009 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 02:31:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:18,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 02:31:18,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:31:18,152 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 02:31:18,152 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:31:18,162 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:31:18,163 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:31:18,163 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2019-11-28 02:31:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:31:18,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:31:18,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-28 02:31:18,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431443482] [2019-11-28 02:31:18,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 02:31:18,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:18,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:31:18,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:31:18,203 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2019-11-28 02:31:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:18,340 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-11-28 02:31:18,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:31:18,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-28 02:31:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:18,342 INFO L225 Difference]: With dead ends: 39 [2019-11-28 02:31:18,342 INFO L226 Difference]: Without dead ends: 39 [2019-11-28 02:31:18,343 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:31:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-28 02:31:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2019-11-28 02:31:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 02:31:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-11-28 02:31:18,349 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2019-11-28 02:31:18,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:18,349 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-11-28 02:31:18,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 02:31:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-11-28 02:31:18,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 02:31:18,351 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:18,351 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 02:31:18,552 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:31:18,553 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:18,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:18,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1610534241, now seen corresponding path program 1 times [2019-11-28 02:31:18,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:18,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681366536] [2019-11-28 02:31:18,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:18,648 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 02:31:18,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681366536] [2019-11-28 02:31:18,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782899878] [2019-11-28 02:31:18,654 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 02:31:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:18,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:31:18,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:31:18,783 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 02:31:18,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:31:18,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2019-11-28 02:31:18,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902033046] [2019-11-28 02:31:18,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 02:31:18,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:18,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 02:31:18,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:31:18,788 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 9 states. [2019-11-28 02:31:18,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:18,985 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2019-11-28 02:31:18,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:31:18,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-11-28 02:31:18,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:18,987 INFO L225 Difference]: With dead ends: 50 [2019-11-28 02:31:18,987 INFO L226 Difference]: Without dead ends: 50 [2019-11-28 02:31:18,988 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:31:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-28 02:31:18,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2019-11-28 02:31:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 02:31:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2019-11-28 02:31:18,994 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2019-11-28 02:31:18,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:18,995 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2019-11-28 02:31:18,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 02:31:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2019-11-28 02:31:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 02:31:18,996 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:18,996 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:19,208 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:31:19,209 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:19,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1613047272, now seen corresponding path program 1 times [2019-11-28 02:31:19,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:19,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917534617] [2019-11-28 02:31:19,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:19,307 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 02:31:19,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917534617] [2019-11-28 02:31:19,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:19,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:31:19,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779289506] [2019-11-28 02:31:19,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:31:19,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:19,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:31:19,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:31:19,316 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2019-11-28 02:31:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:19,412 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-11-28 02:31:19,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:31:19,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-28 02:31:19,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:19,413 INFO L225 Difference]: With dead ends: 44 [2019-11-28 02:31:19,413 INFO L226 Difference]: Without dead ends: 44 [2019-11-28 02:31:19,414 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 02:31:19,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-28 02:31:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-11-28 02:31:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 02:31:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-11-28 02:31:19,418 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2019-11-28 02:31:19,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:19,418 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-11-28 02:31:19,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:31:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-11-28 02:31:19,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 02:31:19,419 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:19,419 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:19,420 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:19,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2133289012, now seen corresponding path program 1 times [2019-11-28 02:31:19,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:19,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101298899] [2019-11-28 02:31:19,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:31:19,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101298899] [2019-11-28 02:31:19,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195441172] [2019-11-28 02:31:19,554 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 02:31:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:19,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:31:19,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:31:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:31:19,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 02:31:19,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2019-11-28 02:31:19,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639089730] [2019-11-28 02:31:19,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:31:19,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:19,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:31:19,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:31:19,698 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2019-11-28 02:31:19,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:19,733 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2019-11-28 02:31:19,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:31:19,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-28 02:31:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:19,735 INFO L225 Difference]: With dead ends: 56 [2019-11-28 02:31:19,735 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 02:31:19,736 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:31:19,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 02:31:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-11-28 02:31:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-28 02:31:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2019-11-28 02:31:19,742 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 21 [2019-11-28 02:31:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:19,743 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2019-11-28 02:31:19,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:31:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2019-11-28 02:31:19,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 02:31:19,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:19,746 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:19,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:31:19,954 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:19,955 INFO L82 PathProgramCache]: Analyzing trace with hash 853425334, now seen corresponding path program 1 times [2019-11-28 02:31:19,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:19,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098821108] [2019-11-28 02:31:19,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:31:20,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098821108] [2019-11-28 02:31:20,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875224202] [2019-11-28 02:31:20,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:31:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:20,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:31:20,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:31:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:31:20,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:31:20,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2019-11-28 02:31:20,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134365706] [2019-11-28 02:31:20,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 02:31:20,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:20,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 02:31:20,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-28 02:31:20,269 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 14 states. [2019-11-28 02:31:20,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:20,784 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2019-11-28 02:31:20,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-28 02:31:20,785 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2019-11-28 02:31:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:20,786 INFO L225 Difference]: With dead ends: 74 [2019-11-28 02:31:20,787 INFO L226 Difference]: Without dead ends: 74 [2019-11-28 02:31:20,788 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2019-11-28 02:31:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-28 02:31:20,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 48. [2019-11-28 02:31:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-28 02:31:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2019-11-28 02:31:20,799 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 21 [2019-11-28 02:31:20,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:20,800 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-11-28 02:31:20,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 02:31:20,800 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2019-11-28 02:31:20,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 02:31:20,801 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:20,801 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 02:31:21,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:31:21,013 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:21,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1707448741, now seen corresponding path program 1 times [2019-11-28 02:31:21,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:21,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751648139] [2019-11-28 02:31:21,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 02:31:21,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751648139] [2019-11-28 02:31:21,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:21,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:31:21,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907504994] [2019-11-28 02:31:21,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:31:21,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:21,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:31:21,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:31:21,112 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2019-11-28 02:31:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:21,137 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-11-28 02:31:21,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:31:21,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-28 02:31:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:21,138 INFO L225 Difference]: With dead ends: 47 [2019-11-28 02:31:21,138 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 02:31:21,139 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:31:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 02:31:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 02:31:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 02:31:21,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 02:31:21,139 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-28 02:31:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:21,140 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:31:21,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:31:21,141 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:31:21,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 02:31:21,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:31:21 BoogieIcfgContainer [2019-11-28 02:31:21,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:31:21,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:31:21,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:31:21,150 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:31:21,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:16" (3/4) ... [2019-11-28 02:31:21,155 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 02:31:21,162 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-28 02:31:21,162 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-28 02:31:21,162 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-28 02:31:21,162 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-28 02:31:21,163 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-28 02:31:21,163 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-28 02:31:21,163 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-28 02:31:21,166 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-28 02:31:21,167 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-28 02:31:21,168 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 02:31:21,168 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 02:31:21,213 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:31:21,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:31:21,216 INFO L168 Benchmark]: Toolchain (without parser) took 6422.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 204.5 MB). Free memory was 960.4 MB in the beginning and 978.0 MB in the end (delta: -17.7 MB). Peak memory consumption was 186.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:21,216 INFO L168 Benchmark]: CDTParser took 0.41 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 02:31:21,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -149.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:21,218 INFO L168 Benchmark]: Boogie Preprocessor took 69.22 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:21,219 INFO L168 Benchmark]: RCFGBuilder took 646.62 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: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:21,220 INFO L168 Benchmark]: TraceAbstraction took 5004.19 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.1 GB in the beginning and 985.7 MB in the end (delta: 72.1 MB). Peak memory consumption was 148.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:21,221 INFO L168 Benchmark]: Witness Printer took 63.65 ms. Allocated memory is still 1.2 GB. Free memory was 985.7 MB in the beginning and 978.0 MB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:21,225 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 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 633.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -149.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 69.22 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 646.62 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: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5004.19 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.1 GB in the beginning and 985.7 MB in the end (delta: 72.1 MB). Peak memory consumption was 148.2 MB. Max. memory is 11.5 GB. * Witness Printer took 63.65 ms. Allocated memory is still 1.2 GB. Free memory was 985.7 MB in the beginning and 978.0 MB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 51 locations, 9 error locations. Result: SAFE, OverallTime: 4.9s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 212 SDtfs, 517 SDslu, 352 SDs, 0 SdLazy, 679 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 23026 SizeOfPredicates, 12 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 18/29 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...