./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/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 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:29,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:29,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:29,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:29,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:29,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:29,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:29,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:29,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:29,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:29,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:29,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:29,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:29,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:29,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:29,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:29,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:29,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:29,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:29,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:29,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:29,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:29,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:29,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:29,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:29,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:29,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:29,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:29,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:29,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:29,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:29,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:29,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:29,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:29,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:29,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:29,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:29,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:29,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:29,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:29,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:29,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 09:02:29,506 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:29,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:29,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:29,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:29,510 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:29,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:29,511 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:29,511 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:29,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:29,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:29,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:29,512 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 09:02:29,512 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 09:02:29,512 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 09:02:29,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:29,512 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:29,513 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:29,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:29,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:29,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:29,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:29,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:29,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:29,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:29,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:29,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:29,514 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/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 -> 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 [2019-10-22 09:02:29,547 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:29,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:29,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:29,567 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:29,568 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:29,569 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2019-10-22 09:02:29,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/data/2b78b68fd/655ea2a7b0904fc2bf401a651de73598/FLAG1fd686c01 [2019-10-22 09:02:30,044 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:30,045 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2019-10-22 09:02:30,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/data/2b78b68fd/655ea2a7b0904fc2bf401a651de73598/FLAG1fd686c01 [2019-10-22 09:02:30,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/data/2b78b68fd/655ea2a7b0904fc2bf401a651de73598 [2019-10-22 09:02:30,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:30,398 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 09:02:30,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:30,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:30,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:30,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:30" (1/1) ... [2019-10-22 09:02:30,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62066543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:30, skipping insertion in model container [2019-10-22 09:02:30,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:30" (1/1) ... [2019-10-22 09:02:30,413 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:30,457 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:30,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:30,812 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:30,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:30,883 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:30,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:30 WrapperNode [2019-10-22 09:02:30,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:30,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:30,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:30,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:30,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:30" (1/1) ... [2019-10-22 09:02:30,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:30" (1/1) ... [2019-10-22 09:02:30,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:30" (1/1) ... [2019-10-22 09:02:30,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:30" (1/1) ... [2019-10-22 09:02:30,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:30" (1/1) ... [2019-10-22 09:02:30,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:30" (1/1) ... [2019-10-22 09:02:30,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:30" (1/1) ... [2019-10-22 09:02:30,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:30,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:30,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:30,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:30,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/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 [2019-10-22 09:02:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 09:02:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 09:02:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 09:02:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 09:02:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 09:02:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 09:02:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 09:02:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 09:02:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 09:02:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 09:02:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 09:02:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 09:02:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 09:02:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 09:02:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 09:02:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 09:02:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 09:02:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 09:02:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 09:02:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 09:02:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 09:02:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 09:02:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 09:02:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 09:02:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 09:02:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 09:02:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 09:02:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 09:02:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 09:02:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 09:02:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 09:02:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 09:02:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 09:02:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 09:02:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 09:02:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 09:02:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 09:02:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 09:02:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 09:02:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 09:02:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 09:02:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 09:02:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 09:02:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 09:02:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 09:02:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 09:02:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 09:02:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 09:02:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 09:02:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 09:02:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 09:02:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 09:02:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 09:02:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 09:02:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 09:02:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 09:02:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 09:02:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 09:02:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 09:02:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 09:02:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 09:02:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 09:02:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 09:02:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 09:02:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 09:02:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 09:02:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 09:02:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 09:02:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 09:02:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 09:02:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 09:02:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 09:02:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 09:02:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 09:02:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 09:02:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 09:02:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 09:02:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 09:02:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 09:02:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 09:02:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 09:02:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 09:02:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 09:02:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 09:02:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 09:02:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 09:02:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 09:02:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 09:02:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 09:02:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 09:02:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 09:02:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 09:02:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 09:02:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 09:02:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 09:02:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 09:02:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 09:02:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 09:02:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 09:02:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 09:02:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 09:02:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 09:02:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 09:02:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 09:02:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 09:02:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 09:02:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 09:02:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 09:02:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 09:02:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 09:02:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 09:02:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 09:02:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 09:02:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 09:02:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 09:02:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-22 09:02:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 09:02:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:02:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:02:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 09:02:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:02:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 09:02:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:31,408 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:31,409 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-22 09:02:31,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:31 BoogieIcfgContainer [2019-10-22 09:02:31,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:31,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:31,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:31,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:31,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:30" (1/3) ... [2019-10-22 09:02:31,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db6895d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:31, skipping insertion in model container [2019-10-22 09:02:31,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:30" (2/3) ... [2019-10-22 09:02:31,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db6895d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:31, skipping insertion in model container [2019-10-22 09:02:31,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:31" (3/3) ... [2019-10-22 09:02:31,417 INFO L109 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe.i [2019-10-22 09:02:31,425 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:31,432 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2019-10-22 09:02:31,442 INFO L249 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2019-10-22 09:02:31,460 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:31,460 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 09:02:31,460 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:31,460 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:31,460 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:31,460 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:31,460 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:31,460 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2019-10-22 09:02:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:02:31,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:31,483 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:31,485 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-10-22 09:02:31,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:31,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1096953401, now seen corresponding path program 1 times [2019-10-22 09:02:31,498 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:31,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467475542] [2019-10-22 09:02:31,499 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:31,499 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:31,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:31,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467475542] [2019-10-22 09:02:31,730 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:31,730 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:02:31,731 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81135361] [2019-10-22 09:02:31,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:31,735 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:31,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:31,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:31,749 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2019-10-22 09:02:31,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:31,938 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2019-10-22 09:02:31,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:02:31,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 09:02:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:31,948 INFO L225 Difference]: With dead ends: 66 [2019-10-22 09:02:31,948 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 09:02:31,950 INFO L600 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 [2019-10-22 09:02:31,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 09:02:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-10-22 09:02:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-10-22 09:02:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2019-10-22 09:02:31,990 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 11 [2019-10-22 09:02:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:31,991 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2019-10-22 09:02:31,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:31,991 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2019-10-22 09:02:31,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:02:31,992 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:31,992 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:31,992 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-10-22 09:02:31,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:31,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893819, now seen corresponding path program 1 times [2019-10-22 09:02:31,993 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:31,993 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034919200] [2019-10-22 09:02:31,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:31,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:31,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:32,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034919200] [2019-10-22 09:02:32,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:32,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:02:32,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130231695] [2019-10-22 09:02:32,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:02:32,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:32,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:32,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:32,136 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 6 states. [2019-10-22 09:02:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:32,408 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2019-10-22 09:02:32,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:32,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-22 09:02:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:32,410 INFO L225 Difference]: With dead ends: 68 [2019-10-22 09:02:32,410 INFO L226 Difference]: Without dead ends: 68 [2019-10-22 09:02:32,410 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-22 09:02:32,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2019-10-22 09:02:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-10-22 09:02:32,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2019-10-22 09:02:32,421 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 11 [2019-10-22 09:02:32,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:32,422 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2019-10-22 09:02:32,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:02:32,422 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2019-10-22 09:02:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:02:32,422 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:32,423 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:32,423 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-10-22 09:02:32,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:32,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893820, now seen corresponding path program 1 times [2019-10-22 09:02:32,423 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:32,424 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470078612] [2019-10-22 09:02:32,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:32,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:32,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:32,483 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470078612] [2019-10-22 09:02:32,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:32,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:32,483 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634315998] [2019-10-22 09:02:32,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:32,484 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:32,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:32,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:32,484 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 4 states. [2019-10-22 09:02:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:32,589 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2019-10-22 09:02:32,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:32,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 09:02:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:32,591 INFO L225 Difference]: With dead ends: 60 [2019-10-22 09:02:32,591 INFO L226 Difference]: Without dead ends: 60 [2019-10-22 09:02:32,591 INFO L600 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 [2019-10-22 09:02:32,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-22 09:02:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-10-22 09:02:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-22 09:02:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2019-10-22 09:02:32,597 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 11 [2019-10-22 09:02:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:32,597 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2019-10-22 09:02:32,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2019-10-22 09:02:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 09:02:32,598 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:32,598 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:32,599 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-10-22 09:02:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:32,599 INFO L82 PathProgramCache]: Analyzing trace with hash -2080946104, now seen corresponding path program 1 times [2019-10-22 09:02:32,599 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:32,599 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337019813] [2019-10-22 09:02:32,600 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:32,600 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:32,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:32,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337019813] [2019-10-22 09:02:32,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222994270] [2019-10-22 09:02:32,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/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 [2019-10-22 09:02:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:32,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:32,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:32,889 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:02:32,889 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-10-22 09:02:32,889 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870037876] [2019-10-22 09:02:32,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:32,890 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:32,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:32,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:32,890 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 5 states. [2019-10-22 09:02:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:32,941 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2019-10-22 09:02:32,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:02:32,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-22 09:02:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:32,944 INFO L225 Difference]: With dead ends: 109 [2019-10-22 09:02:32,945 INFO L226 Difference]: Without dead ends: 109 [2019-10-22 09:02:32,945 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:32,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-22 09:02:32,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 66. [2019-10-22 09:02:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-22 09:02:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2019-10-22 09:02:32,950 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 15 [2019-10-22 09:02:32,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:32,951 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2019-10-22 09:02:32,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2019-10-22 09:02:32,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 09:02:32,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:32,951 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:33,152 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:33,153 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-10-22 09:02:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:33,153 INFO L82 PathProgramCache]: Analyzing trace with hash -591541108, now seen corresponding path program 1 times [2019-10-22 09:02:33,153 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:33,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572902970] [2019-10-22 09:02:33,154 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:33,154 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:33,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:33,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:33,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572902970] [2019-10-22 09:02:33,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478384491] [2019-10-22 09:02:33,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:33,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-22 09:02:33,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:33,467 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2019-10-22 09:02:33,467 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:02:33,476 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:02:33,478 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 09:02:33,479 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:21 [2019-10-22 09:02:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:33,521 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:33,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2019-10-22 09:02:33,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925251776] [2019-10-22 09:02:33,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 09:02:33,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:33,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 09:02:33,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:02:33,522 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 10 states. [2019-10-22 09:02:33,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:33,896 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2019-10-22 09:02:33,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:02:33,897 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-10-22 09:02:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:33,898 INFO L225 Difference]: With dead ends: 123 [2019-10-22 09:02:33,898 INFO L226 Difference]: Without dead ends: 123 [2019-10-22 09:02:33,898 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-22 09:02:33,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-22 09:02:33,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 71. [2019-10-22 09:02:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-10-22 09:02:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2019-10-22 09:02:33,904 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 15 [2019-10-22 09:02:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:33,904 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2019-10-22 09:02:33,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 09:02:33,905 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2019-10-22 09:02:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 09:02:33,905 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:33,905 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:34,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:34,106 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-10-22 09:02:34,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:34,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1400887734, now seen corresponding path program 1 times [2019-10-22 09:02:34,107 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:34,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261020682] [2019-10-22 09:02:34,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:34,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:34,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:34,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261020682] [2019-10-22 09:02:34,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085192734] [2019-10-22 09:02:34,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:34,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 09:02:34,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:34,315 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2019-10-22 09:02:34,315 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:02:34,321 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:02:34,322 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 09:02:34,322 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2019-10-22 09:02:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:34,363 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:34,363 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-10-22 09:02:34,363 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139154868] [2019-10-22 09:02:34,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:02:34,364 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:34,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:02:34,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:34,364 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 8 states. [2019-10-22 09:02:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:34,564 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2019-10-22 09:02:34,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:34,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-10-22 09:02:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:34,566 INFO L225 Difference]: With dead ends: 74 [2019-10-22 09:02:34,566 INFO L226 Difference]: Without dead ends: 74 [2019-10-22 09:02:34,566 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-10-22 09:02:34,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2019-10-22 09:02:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-10-22 09:02:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2019-10-22 09:02:34,571 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 15 [2019-10-22 09:02:34,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:34,571 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2019-10-22 09:02:34,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:02:34,571 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2019-10-22 09:02:34,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:02:34,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:34,572 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:34,773 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:34,773 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-10-22 09:02:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:34,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1665502603, now seen corresponding path program 1 times [2019-10-22 09:02:34,773 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:34,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419036310] [2019-10-22 09:02:34,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:34,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:34,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:02:34,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419036310] [2019-10-22 09:02:34,815 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:34,815 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:02:34,815 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255280019] [2019-10-22 09:02:34,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:34,815 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:34,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:34,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:34,816 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 5 states. [2019-10-22 09:02:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:34,915 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2019-10-22 09:02:34,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:34,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-10-22 09:02:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:34,916 INFO L225 Difference]: With dead ends: 80 [2019-10-22 09:02:34,916 INFO L226 Difference]: Without dead ends: 80 [2019-10-22 09:02:34,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:34,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-10-22 09:02:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2019-10-22 09:02:34,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-10-22 09:02:34,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2019-10-22 09:02:34,921 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 17 [2019-10-22 09:02:34,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:34,921 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2019-10-22 09:02:34,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:34,922 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2019-10-22 09:02:34,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:02:34,922 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:34,922 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:34,922 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-10-22 09:02:34,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:34,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1665502644, now seen corresponding path program 1 times [2019-10-22 09:02:34,923 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:34,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532102721] [2019-10-22 09:02:34,923 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:34,923 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:34,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:34,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:34,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532102721] [2019-10-22 09:02:34,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101285327] [2019-10-22 09:02:34,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:35,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:02:35,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:35,123 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:35,124 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2019-10-22 09:02:35,124 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893538235] [2019-10-22 09:02:35,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 09:02:35,124 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:35,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 09:02:35,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:02:35,125 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 10 states. [2019-10-22 09:02:35,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:35,321 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2019-10-22 09:02:35,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:35,322 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-10-22 09:02:35,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:35,322 INFO L225 Difference]: With dead ends: 81 [2019-10-22 09:02:35,322 INFO L226 Difference]: Without dead ends: 81 [2019-10-22 09:02:35,323 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:02:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-10-22 09:02:35,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2019-10-22 09:02:35,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-10-22 09:02:35,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2019-10-22 09:02:35,327 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 17 [2019-10-22 09:02:35,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:35,327 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2019-10-22 09:02:35,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 09:02:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2019-10-22 09:02:35,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 09:02:35,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:35,333 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:35,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:35,534 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-10-22 09:02:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:35,534 INFO L82 PathProgramCache]: Analyzing trace with hash 94437838, now seen corresponding path program 1 times [2019-10-22 09:02:35,534 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:35,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223358827] [2019-10-22 09:02:35,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:35,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:35,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:35,590 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:35,590 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:02:35,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:35 BoogieIcfgContainer [2019-10-22 09:02:35,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:35,627 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:35,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:35,629 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:35,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:31" (3/4) ... [2019-10-22 09:02:35,631 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:02:35,682 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a93ceba4-755d-478c-900c-7b988ea7ee48/bin/uautomizer/witness.graphml [2019-10-22 09:02:35,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:35,685 INFO L168 Benchmark]: Toolchain (without parser) took 5287.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 939.3 MB in the beginning and 861.2 MB in the end (delta: 78.2 MB). Peak memory consumption was 207.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:35,686 INFO L168 Benchmark]: CDTParser took 2.83 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:35,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:35,687 INFO L168 Benchmark]: Boogie Preprocessor took 44.49 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. [2019-10-22 09:02:35,687 INFO L168 Benchmark]: RCFGBuilder took 480.73 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: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:35,688 INFO L168 Benchmark]: TraceAbstraction took 4216.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 868.1 MB in the end (delta: 189.2 MB). Peak memory consumption was 189.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:35,688 INFO L168 Benchmark]: Witness Printer took 56.66 ms. Allocated memory is still 1.2 GB. Free memory was 868.1 MB in the beginning and 861.2 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:35,690 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.83 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 485.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.49 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 480.73 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: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4216.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 868.1 MB in the end (delta: 189.2 MB). Peak memory consumption was 189.2 MB. Max. memory is 11.5 GB. * Witness Printer took 56.66 ms. Allocated memory is still 1.2 GB. Free memory was 868.1 MB in the beginning and 861.2 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 529]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L518] COND FALSE !(length % 2 == 0) VAL [length=1] [L519] int *arr = __builtin_alloca (length*sizeof(int)); [L521] int i = 0; VAL [__builtin_alloca (length*sizeof(int))={1:0}, arr={1:0}, i=0, length=1] [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() VAL [__builtin_alloca (length*sizeof(int))={1:0}, __VERIFIER_nondet_int()=1, arr={1:0}, i=0, length=1] [L521] i++ VAL [__builtin_alloca (length*sizeof(int))={1:0}, arr={1:0}, i=1, length=1] [L521] COND FALSE !(i < length) VAL [__builtin_alloca (length*sizeof(int))={1:0}, arr={1:0}, i=1, length=1] [L526] i=0 VAL [__builtin_alloca (length*sizeof(int))={1:0}, arr={1:0}, i=1, i=0, length=1] [L526] COND TRUE i