./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer --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 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:45:35,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:45:35,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:45:35,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:45:35,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:45:35,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:45:35,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:45:35,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:45:35,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:45:35,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:45:35,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:45:35,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:45:35,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:45:35,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:45:35,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:45:35,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:45:35,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:45:35,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:45:35,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:45:35,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:45:35,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:45:35,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:45:35,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:45:35,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:45:35,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:45:35,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:45:35,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:45:35,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:45:35,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:45:35,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:45:35,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:45:35,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:45:35,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:45:35,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:45:35,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:45:35,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:45:35,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:45:35,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:45:35,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:45:35,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:45:35,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:45:35,563 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:45:35,575 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:45:35,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:45:35,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:45:35,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:45:35,577 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:45:35,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:45:35,578 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:45:35,578 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:45:35,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:45:35,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:45:35,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:45:35,579 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:45:35,579 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:45:35,579 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:45:35,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:45:35,580 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:45:35,580 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:45:35,580 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:45:35,580 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:45:35,581 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:45:35,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:45:35,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:45:35,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:45:35,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:45:35,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:45:35,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:45:35,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:45:35,582 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:45:35,583 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:45:35,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:45:35,583 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer 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 -> 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 [2019-11-25 08:45:35,725 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:45:35,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:45:35,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:45:35,740 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:45:35,740 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:45:35,741 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2019-11-25 08:45:35,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/data/b7bbfedac/69c7ad2a1bba46acb386b3fa6c9959a3/FLAG9202c0678 [2019-11-25 08:45:36,292 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:45:36,292 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2019-11-25 08:45:36,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/data/b7bbfedac/69c7ad2a1bba46acb386b3fa6c9959a3/FLAG9202c0678 [2019-11-25 08:45:36,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/data/b7bbfedac/69c7ad2a1bba46acb386b3fa6c9959a3 [2019-11-25 08:45:36,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:45:36,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:45:36,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:45:36,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:45:36,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:45:36,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:45:36" (1/1) ... [2019-11-25 08:45:36,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1571b0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:36, skipping insertion in model container [2019-11-25 08:45:36,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:45:36" (1/1) ... [2019-11-25 08:45:36,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:45:36,856 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:45:37,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:45:37,208 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:45:37,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:45:37,298 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:45:37,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:37 WrapperNode [2019-11-25 08:45:37,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:45:37,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:45:37,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:45:37,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:45:37,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:37" (1/1) ... [2019-11-25 08:45:37,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:37" (1/1) ... [2019-11-25 08:45:37,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:37" (1/1) ... [2019-11-25 08:45:37,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:37" (1/1) ... [2019-11-25 08:45:37,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:37" (1/1) ... [2019-11-25 08:45:37,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:37" (1/1) ... [2019-11-25 08:45:37,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:37" (1/1) ... [2019-11-25 08:45:37,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:45:37,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:45:37,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:45:37,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:45:37,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/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 [2019-11-25 08:45:37,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:45:37,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:45:37,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:45:37,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-25 08:45:37,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-25 08:45:37,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-25 08:45:37,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-25 08:45:37,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-25 08:45:37,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:45:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:45:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:45:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:45:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:45:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:45:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:45:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:45:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:45:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:45:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:45:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:45:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:45:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:45:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:45:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:45:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:45:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-25 08:45:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-25 08:45:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-25 08:45:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-25 08:45:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-25 08:45:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:45:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:45:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:45:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:45:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:45:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:45:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:45:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:45:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:45:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:45:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:45:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:45:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:45:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:45:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:45:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:45:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:45:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:45:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:45:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:45:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:45:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:45:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:45:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:45:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:45:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:45:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:45:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:45:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:45:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:45:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:45:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:45:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:45:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:45:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:45:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:45:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:45:37,449 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:45:37,449 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:45:37,449 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:45:37,450 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:45:37,450 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:45:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:45:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:45:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:45:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:45:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:45:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-25 08:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-25 08:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:45:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:45:38,319 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:45:38,319 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-25 08:45:38,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:38 BoogieIcfgContainer [2019-11-25 08:45:38,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:45:38,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:45:38,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:45:38,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:45:38,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:45:36" (1/3) ... [2019-11-25 08:45:38,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414dff8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:45:38, skipping insertion in model container [2019-11-25 08:45:38,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:37" (2/3) ... [2019-11-25 08:45:38,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414dff8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:45:38, skipping insertion in model container [2019-11-25 08:45:38,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:38" (3/3) ... [2019-11-25 08:45:38,327 INFO L109 eAbstractionObserver]: Analyzing ICFG reverse_array_unsafe.i [2019-11-25 08:45:38,336 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:45:38,343 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2019-11-25 08:45:38,353 INFO L249 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2019-11-25 08:45:38,370 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:45:38,371 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:45:38,371 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:45:38,371 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:45:38,371 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:45:38,371 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:45:38,372 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:45:38,372 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:45:38,387 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2019-11-25 08:45:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:45:38,396 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:38,396 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:38,397 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-25 08:45:38,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:38,402 INFO L82 PathProgramCache]: Analyzing trace with hash -429630436, now seen corresponding path program 1 times [2019-11-25 08:45:38,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:38,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1378965945] [2019-11-25 08:45:38,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:38,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:45:38,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:38,711 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 [2019-11-25 08:45:38,713 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:38,721 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:38,722 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:38,722 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:45:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:38,731 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:38,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1378965945] [2019-11-25 08:45:38,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:38,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:45:38,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141944644] [2019-11-25 08:45:38,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:45:38,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:38,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:45:38,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:45:38,769 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2019-11-25 08:45:39,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:39,002 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2019-11-25 08:45:39,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:45:39,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-25 08:45:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:39,011 INFO L225 Difference]: With dead ends: 60 [2019-11-25 08:45:39,011 INFO L226 Difference]: Without dead ends: 57 [2019-11-25 08:45:39,012 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:45:39,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-25 08:45:39,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-11-25 08:45:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-25 08:45:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2019-11-25 08:45:39,043 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 11 [2019-11-25 08:45:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:39,043 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2019-11-25 08:45:39,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:45:39,043 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2019-11-25 08:45:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:45:39,044 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:39,044 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:39,248 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:39,248 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-25 08:45:39,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:39,248 INFO L82 PathProgramCache]: Analyzing trace with hash -429630435, now seen corresponding path program 1 times [2019-11-25 08:45:39,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:39,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [235464323] [2019-11-25 08:45:39,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:39,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:45:39,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:39,448 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:39,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [235464323] [2019-11-25 08:45:39,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:39,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-25 08:45:39,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663224389] [2019-11-25 08:45:39,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:45:39,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:39,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:45:39,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:45:39,462 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 4 states. [2019-11-25 08:45:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:39,673 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2019-11-25 08:45:39,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:45:39,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-25 08:45:39,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:39,679 INFO L225 Difference]: With dead ends: 107 [2019-11-25 08:45:39,679 INFO L226 Difference]: Without dead ends: 107 [2019-11-25 08:45:39,680 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:45:39,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-25 08:45:39,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 58. [2019-11-25 08:45:39,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-25 08:45:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2019-11-25 08:45:39,701 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 11 [2019-11-25 08:45:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:39,702 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2019-11-25 08:45:39,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:45:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2019-11-25 08:45:39,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:45:39,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:39,703 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:39,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:39,914 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-25 08:45:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:39,915 INFO L82 PathProgramCache]: Analyzing trace with hash -429570853, now seen corresponding path program 1 times [2019-11-25 08:45:39,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:39,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [252376293] [2019-11-25 08:45:39,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:45:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:45:40,156 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:45:40,156 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:45:40,357 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:40,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:45:40 BoogieIcfgContainer [2019-11-25 08:45:40,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:45:40,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:45:40,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:45:40,385 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:45:40,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:38" (3/4) ... [2019-11-25 08:45:40,387 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:45:40,440 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_26461bb4-d651-46f1-a281-d895276ff37c/bin/uautomizer/witness.graphml [2019-11-25 08:45:40,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:45:40,442 INFO L168 Benchmark]: Toolchain (without parser) took 3629.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.7 MB in the beginning and 935.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 142.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:40,443 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:45:40,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:40,449 INFO L168 Benchmark]: Boogie Preprocessor took 61.30 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:40,450 INFO L168 Benchmark]: RCFGBuilder took 959.59 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:40,450 INFO L168 Benchmark]: TraceAbstraction took 2062.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.3 MB in the end (delta: 119.1 MB). Peak memory consumption was 119.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:40,451 INFO L168 Benchmark]: Witness Printer took 57.02 ms. Allocated memory is still 1.2 GB. Free memory was 940.3 MB in the beginning and 935.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:40,460 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 485.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.30 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 959.59 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2062.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.3 MB in the end (delta: 119.1 MB). Peak memory consumption was 119.1 MB. Max. memory is 11.5 GB. * Witness Printer took 57.02 ms. Allocated memory is still 1.2 GB. Free memory was 940.3 MB in the beginning and 935.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L518] COND FALSE !(length % 2 == 0) VAL [length=1] [L519] int *arr = __builtin_alloca (length); [L520] int i = 0; VAL [__builtin_alloca (length)={3:0}, arr={3:0}, i=0, length=1] [L520] COND TRUE i < length VAL [__builtin_alloca (length)={3:0}, arr={3:0}, i=0, length=1] [L522] arr[i] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 86 locations, 23 error locations. Result: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 156 SDslu, 66 SDs, 0 SdLazy, 51 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 2 MinimizatonAttempts, 49 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 710 SizeOfPredicates, 2 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...