./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/simple_built_from_end.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/list-properties/simple_built_from_end.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 41b5142f2d6582efd6d9a128e4dfef83faaab097 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/simple_built_from_end.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41b5142f2d6582efd6d9a128e4dfef83faaab097 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:42:23,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:42:23,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:42:23,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:42:23,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:42:23,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:42:23,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:42:23,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:42:23,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:42:23,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:42:23,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:42:23,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:42:23,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:42:23,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:42:23,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:42:23,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:42:23,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:42:23,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:42:23,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:42:23,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:42:23,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:42:23,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:42:23,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:42:23,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:42:23,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:42:23,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:42:23,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:42:23,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:42:23,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:42:23,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:42:23,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:42:23,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:42:23,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:42:23,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:42:23,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:42:23,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:42:23,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:42:23,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:42:23,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:42:23,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:42:23,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:42:23,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:42:23,462 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:42:23,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:42:23,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:42:23,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:42:23,465 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:42:23,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:42:23,465 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:42:23,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:42:23,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:42:23,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:42:23,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:42:23,467 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:42:23,467 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:42:23,467 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:42:23,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:42:23,468 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:42:23,468 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:42:23,468 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:42:23,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:42:23,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:42:23,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:42:23,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:42:23,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:42:23,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:42:23,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:42:23,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:42:23,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:42:23,471 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 -> 41b5142f2d6582efd6d9a128e4dfef83faaab097 [2019-11-28 02:42:23,819 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:42:23,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:42:23,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:42:23,848 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:42:23,849 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:42:23,850 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-11-28 02:42:23,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfff960e/4d01e69bec8d454e8e23a3d5fdfd1a4a/FLAG118642326 [2019-11-28 02:42:24,454 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:42:24,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-11-28 02:42:24,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfff960e/4d01e69bec8d454e8e23a3d5fdfd1a4a/FLAG118642326 [2019-11-28 02:42:24,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfff960e/4d01e69bec8d454e8e23a3d5fdfd1a4a [2019-11-28 02:42:24,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:42:24,775 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:42:24,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:24,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:42:24,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:42:24,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6822e6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24, skipping insertion in model container [2019-11-28 02:42:24,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:42:24,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:42:25,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:25,241 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:42:25,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:25,383 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:42:25,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:25 WrapperNode [2019-11-28 02:42:25,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:25,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:42:25,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:42:25,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:42:25,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:25" (1/1) ... [2019-11-28 02:42:25,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:25" (1/1) ... [2019-11-28 02:42:25,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:25" (1/1) ... [2019-11-28 02:42:25,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:25" (1/1) ... [2019-11-28 02:42:25,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:25" (1/1) ... [2019-11-28 02:42:25,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:25" (1/1) ... [2019-11-28 02:42:25,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:25" (1/1) ... [2019-11-28 02:42:25,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:42:25,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:42:25,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:42:25,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:42:25,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:25" (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 02:42:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:42:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:42:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:42:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:42:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:42:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:42:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:42:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-28 02:42:25,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:42:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 02:42:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:42:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:42:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:42:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:42:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:42:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:42:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:42:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:42:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:42:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:42:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:42:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:42:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:42:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:42:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:42:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:42:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:42:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:42:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:42:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:42:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:42:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:42:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:42:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:42:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:42:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:42:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:42:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:42:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:42:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:42:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:42:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:42:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:42:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:42:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:42:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:42:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:42:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:42:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:42:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:42:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:42:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:42:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:42:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:42:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:42:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:42:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:42:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:42:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:42:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:42:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:42:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:42:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:42:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:42:25,537 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:42:25,537 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:42:25,537 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:42:25,537 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:42:25,537 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:42:25,538 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:42:25,538 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:42:25,538 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:42:25,538 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:42:25,539 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:42:25,539 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:42:25,539 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:42:25,539 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:42:25,539 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:42:25,540 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:42:25,540 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:42:25,540 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:42:25,540 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:42:25,540 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:42:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:42:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:42:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:42:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:42:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:42:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:42:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:42:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:42:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:42:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:42:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:42:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:42:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:42:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:42:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:42:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:42:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:42:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:42:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:42:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:42:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:42:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:42:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:42:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:42:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:42:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:42:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:42:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:42:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:42:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:42:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:42:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:42:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:42:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:42:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:42:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-28 02:42:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:42:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 02:42:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:42:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 02:42:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:42:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 02:42:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:42:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:42:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:42:25,939 INFO L712 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-28 02:42:26,104 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:42:26,104 INFO L297 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 02:42:26,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:26 BoogieIcfgContainer [2019-11-28 02:42:26,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:42:26,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:42:26,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:42:26,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:42:26,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:42:24" (1/3) ... [2019-11-28 02:42:26,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344b4aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:26, skipping insertion in model container [2019-11-28 02:42:26,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:25" (2/3) ... [2019-11-28 02:42:26,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344b4aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:26, skipping insertion in model container [2019-11-28 02:42:26,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:26" (3/3) ... [2019-11-28 02:42:26,115 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2019-11-28 02:42:26,126 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:42:26,135 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-28 02:42:26,149 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-28 02:42:26,167 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:42:26,168 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:42:26,168 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:42:26,168 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:42:26,168 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:42:26,169 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:42:26,169 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:42:26,169 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:42:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-11-28 02:42:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 02:42:26,191 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:26,193 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:26,193 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:26,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:26,198 INFO L82 PathProgramCache]: Analyzing trace with hash 870255052, now seen corresponding path program 1 times [2019-11-28 02:42:26,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:26,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971749208] [2019-11-28 02:42:26,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,386 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 02:42:26,387 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971749208] [2019-11-28 02:42:26,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:26,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:42:26,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567735157] [2019-11-28 02:42:26,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:42:26,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:26,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:42:26,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:26,417 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2019-11-28 02:42:26,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:26,533 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2019-11-28 02:42:26,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:42:26,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 02:42:26,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:26,547 INFO L225 Difference]: With dead ends: 49 [2019-11-28 02:42:26,547 INFO L226 Difference]: Without dead ends: 42 [2019-11-28 02:42:26,550 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-28 02:42:26,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2019-11-28 02:42:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 02:42:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-11-28 02:42:26,597 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 9 [2019-11-28 02:42:26,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:26,597 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-11-28 02:42:26,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:42:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-11-28 02:42:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:42:26,599 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:26,599 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:26,600 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:26,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1207451266, now seen corresponding path program 1 times [2019-11-28 02:42:26,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:26,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684593960] [2019-11-28 02:42:26,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,675 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 02:42:26,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684593960] [2019-11-28 02:42:26,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:26,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:42:26,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202253708] [2019-11-28 02:42:26,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:42:26,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:26,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:42:26,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:42:26,680 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2019-11-28 02:42:26,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:26,792 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2019-11-28 02:42:26,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:26,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 02:42:26,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:26,794 INFO L225 Difference]: With dead ends: 40 [2019-11-28 02:42:26,794 INFO L226 Difference]: Without dead ends: 39 [2019-11-28 02:42:26,795 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 02:42:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-28 02:42:26,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-11-28 02:42:26,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 02:42:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-11-28 02:42:26,801 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 10 [2019-11-28 02:42:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:26,801 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-11-28 02:42:26,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:42:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-11-28 02:42:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:42:26,802 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:26,802 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:26,803 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:26,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:26,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1207452581, now seen corresponding path program 1 times [2019-11-28 02:42:26,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:26,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698730963] [2019-11-28 02:42:26,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,867 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 02:42:26,867 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698730963] [2019-11-28 02:42:26,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:26,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:42:26,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257967461] [2019-11-28 02:42:26,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:42:26,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:26,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:42:26,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:42:26,870 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 4 states. [2019-11-28 02:42:26,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:26,948 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-11-28 02:42:26,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:42:26,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 02:42:26,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:26,949 INFO L225 Difference]: With dead ends: 29 [2019-11-28 02:42:26,949 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 02:42:26,950 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 02:42:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 02:42:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 02:42:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 02:42:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-11-28 02:42:26,955 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 10 [2019-11-28 02:42:26,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:26,955 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-11-28 02:42:26,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:42:26,956 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-11-28 02:42:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:42:26,956 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:26,956 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:26,957 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:26,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:26,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1207452582, now seen corresponding path program 1 times [2019-11-28 02:42:26,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:26,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818496504] [2019-11-28 02:42:26,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,082 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 02:42:27,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818496504] [2019-11-28 02:42:27,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:27,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:42:27,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030216255] [2019-11-28 02:42:27,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:42:27,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:27,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:42:27,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:42:27,086 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2019-11-28 02:42:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:27,160 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-28 02:42:27,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:42:27,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 02:42:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:27,162 INFO L225 Difference]: With dead ends: 27 [2019-11-28 02:42:27,162 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 02:42:27,162 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 02:42:27,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 02:42:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-28 02:42:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 02:42:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-28 02:42:27,167 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 10 [2019-11-28 02:42:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:27,168 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-28 02:42:27,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:42:27,168 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-28 02:42:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 02:42:27,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:27,170 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:27,170 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:27,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:27,171 INFO L82 PathProgramCache]: Analyzing trace with hash -821123348, now seen corresponding path program 1 times [2019-11-28 02:42:27,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:27,171 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254683761] [2019-11-28 02:42:27,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:27,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254683761] [2019-11-28 02:42:27,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:27,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:42:27,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209594949] [2019-11-28 02:42:27,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:42:27,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:27,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:42:27,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:42:27,295 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 5 states. [2019-11-28 02:42:27,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:27,394 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2019-11-28 02:42:27,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:27,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-28 02:42:27,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:27,396 INFO L225 Difference]: With dead ends: 35 [2019-11-28 02:42:27,396 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 02:42:27,396 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 02:42:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-11-28 02:42:27,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 02:42:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-28 02:42:27,402 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2019-11-28 02:42:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:27,402 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-28 02:42:27,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:42:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-28 02:42:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 02:42:27,403 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:27,404 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:27,404 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:27,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:27,405 INFO L82 PathProgramCache]: Analyzing trace with hash -821123347, now seen corresponding path program 1 times [2019-11-28 02:42:27,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:27,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795430996] [2019-11-28 02:42:27,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:27,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795430996] [2019-11-28 02:42:27,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:27,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:42:27,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611462201] [2019-11-28 02:42:27,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:42:27,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:27,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:42:27,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:42:27,545 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2019-11-28 02:42:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:27,667 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2019-11-28 02:42:27,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:27,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-28 02:42:27,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:27,668 INFO L225 Difference]: With dead ends: 39 [2019-11-28 02:42:27,668 INFO L226 Difference]: Without dead ends: 39 [2019-11-28 02:42:27,669 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:27,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-28 02:42:27,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2019-11-28 02:42:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 02:42:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-28 02:42:27,673 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 16 [2019-11-28 02:42:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:27,674 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-28 02:42:27,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:42:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-28 02:42:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 02:42:27,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:27,675 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:27,675 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:27,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:27,675 INFO L82 PathProgramCache]: Analyzing trace with hash -821123391, now seen corresponding path program 1 times [2019-11-28 02:42:27,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:27,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548344330] [2019-11-28 02:42:27,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:27,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548344330] [2019-11-28 02:42:27,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:27,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:42:27,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182019309] [2019-11-28 02:42:27,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:42:27,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:27,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:42:27,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:42:27,740 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2019-11-28 02:42:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:27,832 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2019-11-28 02:42:27,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:27,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-28 02:42:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:27,834 INFO L225 Difference]: With dead ends: 37 [2019-11-28 02:42:27,834 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 02:42:27,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:27,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 02:42:27,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-28 02:42:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 02:42:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-11-28 02:42:27,840 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2019-11-28 02:42:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:27,840 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-11-28 02:42:27,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:42:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-11-28 02:42:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 02:42:27,841 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:27,842 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:27,842 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:27,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:27,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1174445805, now seen corresponding path program 1 times [2019-11-28 02:42:27,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:27,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859439571] [2019-11-28 02:42:27,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:27,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859439571] [2019-11-28 02:42:27,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:27,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 02:42:27,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410534423] [2019-11-28 02:42:27,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:42:27,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:27,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:42:27,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:27,960 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 6 states. [2019-11-28 02:42:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:28,086 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2019-11-28 02:42:28,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:42:28,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-28 02:42:28,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:28,088 INFO L225 Difference]: With dead ends: 34 [2019-11-28 02:42:28,088 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 02:42:28,089 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:42:28,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 02:42:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-11-28 02:42:28,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 02:42:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-11-28 02:42:28,093 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 18 [2019-11-28 02:42:28,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:28,094 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2019-11-28 02:42:28,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:42:28,094 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2019-11-28 02:42:28,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 02:42:28,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:28,096 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:28,096 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:28,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:28,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1116213141, now seen corresponding path program 1 times [2019-11-28 02:42:28,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:28,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132434766] [2019-11-28 02:42:28,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:28,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132434766] [2019-11-28 02:42:28,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521160880] [2019-11-28 02:42:28,293 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 02:42:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:28,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-28 02:42:28,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:28,583 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-11-28 02:42:28,583 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,593 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:28,597 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-11-28 02:42:28,598 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,605 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:28,606 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,606 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-11-28 02:42:28,656 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-28 02:42:28,657 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,667 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:28,670 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-28 02:42:28,671 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,677 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:28,677 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,677 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-28 02:42:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:28,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:42:28,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 10 [2019-11-28 02:42:28,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649152836] [2019-11-28 02:42:28,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 02:42:28,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:28,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 02:42:28,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:42:28,685 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 10 states. [2019-11-28 02:42:28,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:28,932 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2019-11-28 02:42:28,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 02:42:28,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2019-11-28 02:42:28,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:28,934 INFO L225 Difference]: With dead ends: 46 [2019-11-28 02:42:28,935 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 02:42:28,935 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-28 02:42:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 02:42:28,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2019-11-28 02:42:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-28 02:42:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-11-28 02:42:28,941 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 21 [2019-11-28 02:42:28,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:28,941 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2019-11-28 02:42:28,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 02:42:28,942 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2019-11-28 02:42:28,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 02:42:28,943 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:28,943 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 02:42:29,154 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:42:29,155 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:29,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:29,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1116213098, now seen corresponding path program 1 times [2019-11-28 02:42:29,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:29,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55135137] [2019-11-28 02:42:29,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:29,239 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:42:29,240 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:42:29,260 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 02:42:29,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:42:29 BoogieIcfgContainer [2019-11-28 02:42:29,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:42:29,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:42:29,274 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:42:29,274 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:42:29,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:26" (3/4) ... [2019-11-28 02:42:29,280 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:42:29,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:42:29,281 INFO L168 Benchmark]: Toolchain (without parser) took 4507.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 214.4 MB). Free memory was 961.7 MB in the beginning and 1.2 GB in the end (delta: -236.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:42:29,282 INFO L168 Benchmark]: CDTParser took 0.59 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 02:42:29,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -171.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:29,283 INFO L168 Benchmark]: Boogie Preprocessor took 81.97 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:29,284 INFO L168 Benchmark]: RCFGBuilder took 638.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:29,285 INFO L168 Benchmark]: TraceAbstraction took 3166.27 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -123.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:42:29,285 INFO L168 Benchmark]: Witness Printer took 6.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:42:29,288 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 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 609.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -171.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.97 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 638.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3166.27 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -123.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 6.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] List t; [L522] List p = 0; VAL [p={0:0}] [L523] COND TRUE __VERIFIER_nondet_int() [L524] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L525] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L526] t->h = 1 VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L527] t->n = p VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L528] p = t VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L523] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L531] EXPR p->h VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-1:0}] [L531] COND FALSE !(p->h != 1) [L534] EXPR p->n VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={0:0}, t={-1:0}] [L534] p = p->n [L530] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 51 locations, 10 error locations. Result: UNSAFE, OverallTime: 3.0s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 171 SDtfs, 228 SDslu, 166 SDs, 0 SdLazy, 500 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=9, 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, 9 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 13383 SizeOfPredicates, 11 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 10/16 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:42:31,371 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-28 02:42:31,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:42:31,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:42:31,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:42:31,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:42:31,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:42:31,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:42:31,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:42:31,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:42:31,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:42:31,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:42:31,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:42:31,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-28 02:42:31,478 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:42:31,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:42:31,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:42:31,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:42:31,484 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:42:31,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:42:31,484 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:42:31,485 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:42:31,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:42:31,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:42:31,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:42:31,487 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:42:31,487 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:42:31,488 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:42:31,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:42:31,489 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:42:31,489 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 02:42:31,489 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 02:42:31,489 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:42:31,490 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:42:31,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:42:31,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:42:31,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:42:31,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:42:31,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:42:31,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:42:31,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:42:31,492 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 02:42:31,492 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 02:42:31,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 02:42:31,492 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 41b5142f2d6582efd6d9a128e4dfef83faaab097 [2019-11-28 02:42:31,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:42:31,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:42:31,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:42:31,824 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:42:31,825 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:42:31,827 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-11-28 02:42:31,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03d5b32d7/cb0f787ed6fe4239928cfd9ea7392ed2/FLAG5f45abdfd [2019-11-28 02:42:32,400 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:42:32,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple_built_from_end.i [2019-11-28 02:42:32,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03d5b32d7/cb0f787ed6fe4239928cfd9ea7392ed2/FLAG5f45abdfd [2019-11-28 02:42:32,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03d5b32d7/cb0f787ed6fe4239928cfd9ea7392ed2 [2019-11-28 02:42:32,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:42:32,705 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:42:32,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:32,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:42:32,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:42:32,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:32" (1/1) ... [2019-11-28 02:42:32,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3eb5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:32, skipping insertion in model container [2019-11-28 02:42:32,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:32" (1/1) ... [2019-11-28 02:42:32,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:42:32,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:42:33,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:33,197 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:42:33,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:33,292 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:42:33,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33 WrapperNode [2019-11-28 02:42:33,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:33,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:42:33,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:42:33,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:42:33,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:42:33,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:42:33,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:42:33,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:42:33,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (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 02:42:33,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:42:33,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:42:33,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 02:42:33,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:42:33,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:42:33,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:42:33,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:42:33,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:42:33,464 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-28 02:42:33,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:42:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 02:42:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:42:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:42:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:42:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:42:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:42:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:42:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:42:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:42:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:42:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:42:33,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:42:33,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:42:33,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:42:33,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:42:33,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:42:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:42:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:42:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:42:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:42:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:42:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:42:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:42:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:42:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:42:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:42:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:42:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:42:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:42:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:42:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:42:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:42:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:42:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:42:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:42:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:42:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:42:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:42:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:42:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:42:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:42:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:42:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:42:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:42:33,474 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:42:33,474 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:42:33,474 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:42:33,474 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:42:33,474 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:42:33,475 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:42:33,475 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:42:33,475 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:42:33,475 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:42:33,475 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:42:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:42:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:42:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:42:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:42:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:42:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:42:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:42:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:42:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:42:33,478 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:42:33,478 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:42:33,478 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:42:33,478 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:42:33,478 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:42:33,479 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:42:33,479 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:42:33,479 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:42:33,479 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:42:33,479 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:42:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:42:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:42:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:42:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:42:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:42:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:42:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:42:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:42:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:42:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:42:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:42:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:42:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:42:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:42:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:42:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:42:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:42:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:42:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:42:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:42:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:42:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:42:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:42:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:42:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:42:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:42:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:42:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:42:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:42:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:42:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:42:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:42:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:42:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:42:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:42:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:42:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-28 02:42:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:42:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 02:42:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 02:42:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 02:42:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 02:42:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 02:42:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:42:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:42:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 02:42:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:42:33,920 INFO L712 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-28 02:42:34,121 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:42:34,122 INFO L297 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 02:42:34,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:34 BoogieIcfgContainer [2019-11-28 02:42:34,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:42:34,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:42:34,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:42:34,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:42:34,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:42:32" (1/3) ... [2019-11-28 02:42:34,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55140945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:34, skipping insertion in model container [2019-11-28 02:42:34,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (2/3) ... [2019-11-28 02:42:34,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55140945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:34, skipping insertion in model container [2019-11-28 02:42:34,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:34" (3/3) ... [2019-11-28 02:42:34,133 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2019-11-28 02:42:34,145 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:42:34,153 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-28 02:42:34,166 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-28 02:42:34,185 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:42:34,185 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:42:34,186 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:42:34,186 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:42:34,186 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:42:34,186 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:42:34,186 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:42:34,186 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:42:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-28 02:42:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 02:42:34,208 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:34,209 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:34,210 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:34,216 INFO L82 PathProgramCache]: Analyzing trace with hash -72951773, now seen corresponding path program 1 times [2019-11-28 02:42:34,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:34,228 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333417981] [2019-11-28 02:42:34,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:34,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:42:34,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:34,442 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 02:42:34,443 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:34,462 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 02:42:34,465 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333417981] [2019-11-28 02:42:34,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:34,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 02:42:34,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283434942] [2019-11-28 02:42:34,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:42:34,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:34,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:42:34,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:34,485 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2019-11-28 02:42:34,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:34,592 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-11-28 02:42:34,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:42:34,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 02:42:34,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:34,606 INFO L225 Difference]: With dead ends: 47 [2019-11-28 02:42:34,606 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 02:42:34,608 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 02:42:34,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2019-11-28 02:42:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 02:42:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-11-28 02:42:34,657 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 9 [2019-11-28 02:42:34,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:34,658 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-11-28 02:42:34,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:42:34,659 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-11-28 02:42:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 02:42:34,659 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:34,659 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:34,873 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 02:42:34,874 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:34,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:34,874 INFO L82 PathProgramCache]: Analyzing trace with hash -72951730, now seen corresponding path program 1 times [2019-11-28 02:42:34,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:34,875 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907628282] [2019-11-28 02:42:34,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:34,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 02:42:34,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:35,024 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 02:42:35,025 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:35,034 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 02:42:35,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907628282] [2019-11-28 02:42:35,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:35,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-28 02:42:35,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349276743] [2019-11-28 02:42:35,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:42:35,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:35,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:42:35,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:35,040 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 3 states. [2019-11-28 02:42:35,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:35,095 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2019-11-28 02:42:35,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:42:35,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 02:42:35,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:35,097 INFO L225 Difference]: With dead ends: 38 [2019-11-28 02:42:35,099 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 02:42:35,100 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:35,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 02:42:35,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2019-11-28 02:42:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 02:42:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-11-28 02:42:35,110 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2019-11-28 02:42:35,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:35,111 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-11-28 02:42:35,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:42:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-11-28 02:42:35,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 02:42:35,112 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:35,112 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:35,324 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 02:42:35,325 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:35,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:35,326 INFO L82 PathProgramCache]: Analyzing trace with hash -72950415, now seen corresponding path program 1 times [2019-11-28 02:42:35,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:35,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100080026] [2019-11-28 02:42:35,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:35,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 02:42:35,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:35,484 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 6 treesize of output 5 [2019-11-28 02:42:35,484 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:35,490 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:35,491 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:35,491 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-28 02:42:35,498 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 02:42:35,498 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:35,510 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 02:42:35,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100080026] [2019-11-28 02:42:35,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:35,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 02:42:35,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36403691] [2019-11-28 02:42:35,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:42:35,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:35,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:42:35,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:35,514 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2019-11-28 02:42:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:35,594 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-28 02:42:35,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:42:35,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 02:42:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:35,600 INFO L225 Difference]: With dead ends: 27 [2019-11-28 02:42:35,600 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 02:42:35,601 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:35,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 02:42:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-28 02:42:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 02:42:35,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-28 02:42:35,612 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2019-11-28 02:42:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:35,613 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-28 02:42:35,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:42:35,613 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-28 02:42:35,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 02:42:35,613 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:35,614 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:35,814 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 02:42:35,815 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:35,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:35,816 INFO L82 PathProgramCache]: Analyzing trace with hash -72950414, now seen corresponding path program 1 times [2019-11-28 02:42:35,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:35,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393248431] [2019-11-28 02:42:35,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:35,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:42:35,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:35,939 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 6 treesize of output 5 [2019-11-28 02:42:35,940 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:35,949 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:35,949 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:35,950 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-28 02:42:35,969 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 02:42:35,970 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:36,063 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 02:42:36,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393248431] [2019-11-28 02:42:36,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:36,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-28 02:42:36,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911587205] [2019-11-28 02:42:36,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:42:36,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:36,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:42:36,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:42:36,071 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2019-11-28 02:42:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:36,149 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-11-28 02:42:36,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:42:36,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-28 02:42:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:36,152 INFO L225 Difference]: With dead ends: 25 [2019-11-28 02:42:36,153 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 02:42:36,153 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:42:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 02:42:36,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-28 02:42:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 02:42:36,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-11-28 02:42:36,161 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 9 [2019-11-28 02:42:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:36,163 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-11-28 02:42:36,163 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:42:36,164 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-11-28 02:42:36,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 02:42:36,165 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:36,165 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:36,376 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 02:42:36,376 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:36,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1029445870, now seen corresponding path program 1 times [2019-11-28 02:42:36,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:36,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721873024] [2019-11-28 02:42:36,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:36,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:42:36,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:36,541 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:36,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721873024] [2019-11-28 02:42:36,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:36,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-28 02:42:36,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427353293] [2019-11-28 02:42:36,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:42:36,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:36,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:42:36,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:42:36,554 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2019-11-28 02:42:36,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:36,677 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2019-11-28 02:42:36,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:42:36,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 02:42:36,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:36,679 INFO L225 Difference]: With dead ends: 40 [2019-11-28 02:42:36,679 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 02:42:36,679 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 02:42:36,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 02:42:36,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2019-11-28 02:42:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 02:42:36,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-11-28 02:42:36,684 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 14 [2019-11-28 02:42:36,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:36,684 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-11-28 02:42:36,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:42:36,684 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-11-28 02:42:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 02:42:36,685 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:36,685 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:36,895 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 02:42:36,896 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:36,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:36,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1029445913, now seen corresponding path program 1 times [2019-11-28 02:42:36,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:36,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171757775] [2019-11-28 02:42:36,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:37,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:42:37,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:37,019 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 6 treesize of output 5 [2019-11-28 02:42:37,019 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:37,023 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:37,023 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:37,024 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-28 02:42:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:37,038 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:37,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171757775] [2019-11-28 02:42:37,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:37,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-28 02:42:37,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354082068] [2019-11-28 02:42:37,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:42:37,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:37,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:42:37,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:42:37,050 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 4 states. [2019-11-28 02:42:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:37,162 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-11-28 02:42:37,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:42:37,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 02:42:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:37,164 INFO L225 Difference]: With dead ends: 31 [2019-11-28 02:42:37,164 INFO L226 Difference]: Without dead ends: 31 [2019-11-28 02:42:37,164 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 02:42:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-28 02:42:37,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-11-28 02:42:37,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 02:42:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-11-28 02:42:37,169 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 14 [2019-11-28 02:42:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:37,169 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-11-28 02:42:37,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:42:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-11-28 02:42:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 02:42:37,170 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:37,171 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:37,387 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-28 02:42:37,388 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:37,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:37,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1029445914, now seen corresponding path program 1 times [2019-11-28 02:42:37,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:37,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587275792] [2019-11-28 02:42:37,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:37,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:42:37,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:37,514 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 6 treesize of output 5 [2019-11-28 02:42:37,515 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:37,520 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:37,520 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:37,520 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-28 02:42:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:37,542 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:37,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587275792] [2019-11-28 02:42:37,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:37,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-28 02:42:37,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612065534] [2019-11-28 02:42:37,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:42:37,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:37,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:42:37,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:37,640 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2019-11-28 02:42:37,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:37,836 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2019-11-28 02:42:37,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:37,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-28 02:42:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:37,838 INFO L225 Difference]: With dead ends: 35 [2019-11-28 02:42:37,838 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 02:42:37,838 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:42:37,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 02:42:37,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-11-28 02:42:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 02:42:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-28 02:42:37,842 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 14 [2019-11-28 02:42:37,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:37,842 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-28 02:42:37,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:42:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-28 02:42:37,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 02:42:37,843 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:37,843 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:38,044 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-28 02:42:38,045 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:38,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:38,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1455045754, now seen corresponding path program 1 times [2019-11-28 02:42:38,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:38,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277321727] [2019-11-28 02:42:38,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:38,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:42:38,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:38,151 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2019-11-28 02:42:38,151 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,157 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:38,158 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,158 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-28 02:42:38,183 INFO L343 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2019-11-28 02:42:38,183 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2019-11-28 02:42:38,184 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,187 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:38,188 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,188 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:7 [2019-11-28 02:42:38,203 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-28 02:42:38,203 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,207 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:38,207 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,207 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:5 [2019-11-28 02:42:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:38,220 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:38,235 INFO L508 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 02:42:38,239 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:38,240 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 02:42:38,240 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:14 [2019-11-28 02:42:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:38,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277321727] [2019-11-28 02:42:38,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:38,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-28 02:42:38,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892611054] [2019-11-28 02:42:38,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:42:38,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:38,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:42:38,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:42:38,268 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2019-11-28 02:42:38,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:38,431 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-11-28 02:42:38,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:42:38,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-28 02:42:38,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:38,434 INFO L225 Difference]: With dead ends: 32 [2019-11-28 02:42:38,434 INFO L226 Difference]: Without dead ends: 32 [2019-11-28 02:42:38,435 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:42:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-28 02:42:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2019-11-28 02:42:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 02:42:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-11-28 02:42:38,438 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2019-11-28 02:42:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:38,439 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-11-28 02:42:38,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:42:38,439 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-11-28 02:42:38,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 02:42:38,439 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:38,440 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:38,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-28 02:42:38,648 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr6ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-28 02:42:38,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:38,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1832010702, now seen corresponding path program 1 times [2019-11-28 02:42:38,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:38,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770223417] [2019-11-28 02:42:38,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:38,818 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 02:42:38,818 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:42:39,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-11-28 02:42:39,035 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 02:42:39,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:42:39 BoogieIcfgContainer [2019-11-28 02:42:39,056 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:42:39,057 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:42:39,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:42:39,058 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:42:39,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:34" (3/4) ... [2019-11-28 02:42:39,062 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:42:39,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:42:39,065 INFO L168 Benchmark]: Toolchain (without parser) took 6359.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.7 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -111.3 MB). Peak memory consumption was 86.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:39,065 INFO L168 Benchmark]: CDTParser took 0.35 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 02:42:39,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:39,068 INFO L168 Benchmark]: Boogie Preprocessor took 112.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:39,077 INFO L168 Benchmark]: RCFGBuilder took 717.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:39,079 INFO L168 Benchmark]: TraceAbstraction took 4931.53 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -25.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:39,081 INFO L168 Benchmark]: Witness Printer took 5.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:42:39,087 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 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 587.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 112.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 717.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4931.53 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -25.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] List t; [L522] List p = 0; VAL [p={0:0}] [L523] COND TRUE __VERIFIER_nondet_int() [L524] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L525] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L526] t->h = 1 VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L527] t->n = p VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L528] p = t VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, t={1:0}] [L523] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, t={1:0}] [L531] EXPR p->h VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=1, t={1:0}] [L531] COND FALSE !(p->h != 1) [L534] EXPR p->n VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, p->n={0:0}, t={1:0}] [L534] p = p->n [L530] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 56 locations, 10 error locations. Result: UNSAFE, OverallTime: 4.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 153 SDtfs, 190 SDslu, 124 SDs, 0 SdLazy, 177 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 7188 SizeOfPredicates, 22 NumberOfNonLiveVariables, 400 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 8/8 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...