./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/count_down_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_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/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 744113fc2ef40828e0832f07c1176e726449b166 ...................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:59:56,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:59:56,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:59:56,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:59:56,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:59:56,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:59:56,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:59:56,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:59:56,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:59:56,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:59:56,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:59:56,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:59:56,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:59:56,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:59:56,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:59:56,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:59:56,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:59:56,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:59:56,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:59:56,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:59:56,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:59:56,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:59:56,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:59:56,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:59:56,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:59:56,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:59:56,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:59:56,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:59:56,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:59:56,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:59:56,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:59:56,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:59:56,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:59:56,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:59:56,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:59:56,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:59:56,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:59:56,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:59:56,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:59:56,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:59:56,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:59:56,862 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:59:56,873 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:59:56,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:59:56,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:59:56,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:59:56,874 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:59:56,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:59:56,874 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:59:56,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:59:56,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:59:56,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:59:56,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:59:56,875 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:59:56,875 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:59:56,876 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:59:56,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:59:56,876 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:59:56,876 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:59:56,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:59:56,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:59:56,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:59:56,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:59:56,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:59:56,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:59:56,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:59:56,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:59:56,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:59:56,878 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_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/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 -> 744113fc2ef40828e0832f07c1176e726449b166 [2019-10-22 08:59:56,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:59:56,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:59:56,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:59:56,923 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:59:56,924 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:59:56,924 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2019-10-22 08:59:56,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/bin/uautomizer/data/b4bffc2c3/aa38605d4ddc4fbcaab4ed2388c278d1/FLAG0dc06aaaf [2019-10-22 08:59:57,392 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:59:57,393 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2019-10-22 08:59:57,402 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/bin/uautomizer/data/b4bffc2c3/aa38605d4ddc4fbcaab4ed2388c278d1/FLAG0dc06aaaf [2019-10-22 08:59:57,413 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/bin/uautomizer/data/b4bffc2c3/aa38605d4ddc4fbcaab4ed2388c278d1 [2019-10-22 08:59:57,416 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:59:57,417 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:59:57,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:57,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:59:57,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:59:57,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:57" (1/1) ... [2019-10-22 08:59:57,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec66d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:57, skipping insertion in model container [2019-10-22 08:59:57,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:57" (1/1) ... [2019-10-22 08:59:57,432 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:59:57,468 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:59:57,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:57,840 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:59:57,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:57,934 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:59:57,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:57 WrapperNode [2019-10-22 08:59:57,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:57,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:59:57,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:59:57,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:59:57,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:57" (1/1) ... [2019-10-22 08:59:57,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:57" (1/1) ... [2019-10-22 08:59:57,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:57" (1/1) ... [2019-10-22 08:59:57,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:57" (1/1) ... [2019-10-22 08:59:57,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:57" (1/1) ... [2019-10-22 08:59:57,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:57" (1/1) ... [2019-10-22 08:59:57,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:57" (1/1) ... [2019-10-22 08:59:57,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:59:57,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:59:57,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:59:57,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:59:57,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/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 08:59:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:59:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:59:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:59:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:59:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 08:59:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 08:59:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 08:59:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:59:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:59:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:59:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:59:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:59:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:59:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:59:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:59:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:59:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:59:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:59:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:59:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:59:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:59:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:59:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:59:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:59:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:59:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:59:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 08:59:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 08:59:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 08:59:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:59:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:59:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:59:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:59:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:59:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:59:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:59:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:59:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:59:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:59:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:59:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:59:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:59:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:59:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:59:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:59:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:59:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:59:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:59:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:59:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:59:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:59:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:59:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:59:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:59:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:59:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:59:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:59:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:59:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:59:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:59:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:59:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:59:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:59:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:59:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:59:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:59:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:59:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:59:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:59:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:59:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:59:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:59:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:59:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:59:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:59:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:59:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:59:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:59:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:59:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:59:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:59:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:59:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:59:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:59:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:59:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:59:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:59:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:59:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:59:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:59:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:59:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:59:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:59:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:59:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:59:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:59:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:59:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:59:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:59:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:59:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:59:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:59:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:59:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:59:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:59:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:59:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:59:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:59:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:59:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:59:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:59:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:59:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:59:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:59:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:59:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 08:59:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:59:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:59:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:59:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:59:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:59:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:59:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:59:58,414 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:59:58,414 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-22 08:59:58,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:58 BoogieIcfgContainer [2019-10-22 08:59:58,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:59:58,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:59:58,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:59:58,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:59:58,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:59:57" (1/3) ... [2019-10-22 08:59:58,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf5bc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:58, skipping insertion in model container [2019-10-22 08:59:58,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:57" (2/3) ... [2019-10-22 08:59:58,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf5bc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:58, skipping insertion in model container [2019-10-22 08:59:58,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:58" (3/3) ... [2019-10-22 08:59:58,421 INFO L109 eAbstractionObserver]: Analyzing ICFG count_down_unsafe.i [2019-10-22 08:59:58,430 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:59:58,437 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-10-22 08:59:58,447 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-10-22 08:59:58,465 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:59:58,465 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:59:58,466 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:59:58,466 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:59:58,466 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:59:58,466 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:59:58,467 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:59:58,467 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:59:58,484 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-10-22 08:59:58,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:59:58,498 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:58,499 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:58,501 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-10-22 08:59:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:58,510 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2019-10-22 08:59:58,519 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:58,521 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642503090] [2019-10-22 08:59:58,521 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:58,521 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:58,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:58,716 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 08:59:58,717 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642503090] [2019-10-22 08:59:58,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:58,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:59:58,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206160516] [2019-10-22 08:59:58,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:59:58,723 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:58,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:59:58,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:59:58,739 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-10-22 08:59:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:58,860 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-10-22 08:59:58,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:59:58,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 08:59:58,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:58,870 INFO L225 Difference]: With dead ends: 36 [2019-10-22 08:59:58,870 INFO L226 Difference]: Without dead ends: 33 [2019-10-22 08:59:58,872 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 08:59:58,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-22 08:59:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-10-22 08:59:58,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-22 08:59:58,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-22 08:59:58,906 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2019-10-22 08:59:58,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:58,907 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-22 08:59:58,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:59:58,907 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-22 08:59:58,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:59:58,908 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:58,908 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:58,908 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-10-22 08:59:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:58,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2019-10-22 08:59:58,909 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:58,909 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838881205] [2019-10-22 08:59:58,909 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:58,909 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:58,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:59,000 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 08:59:59,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838881205] [2019-10-22 08:59:59,001 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:59,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:59:59,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736217134] [2019-10-22 08:59:59,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:59:59,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:59,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:59:59,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:59:59,008 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2019-10-22 08:59:59,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:59,110 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-10-22 08:59:59,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:59:59,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-22 08:59:59,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:59,112 INFO L225 Difference]: With dead ends: 29 [2019-10-22 08:59:59,112 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:59:59,113 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 08:59:59,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:59:59,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 08:59:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:59:59,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-22 08:59:59,117 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2019-10-22 08:59:59,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:59,117 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-22 08:59:59,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:59:59,117 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-22 08:59:59,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:59:59,118 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:59,120 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:59,121 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-10-22 08:59:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:59,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2019-10-22 08:59:59,122 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:59,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729357537] [2019-10-22 08:59:59,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:59,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:59,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:59,211 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:59,211 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:59:59,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:59:59 BoogieIcfgContainer [2019-10-22 08:59:59,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:59:59,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:59:59,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:59:59,235 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:59:59,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:58" (3/4) ... [2019-10-22 08:59:59,237 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:59:59,271 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5b7f7757-812c-46fa-85bd-dc10f59d2ec5/bin/uautomizer/witness.graphml [2019-10-22 08:59:59,271 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:59:59,273 INFO L168 Benchmark]: Toolchain (without parser) took 1855.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 943.2 MB in the beginning and 1.0 GB in the end (delta: -73.1 MB). Peak memory consumption was 63.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:59,274 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:59,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 516.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:59,275 INFO L168 Benchmark]: Boogie Preprocessor took 47.50 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:59,276 INFO L168 Benchmark]: RCFGBuilder took 432.43 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: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:59,276 INFO L168 Benchmark]: TraceAbstraction took 818.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:59,277 INFO L168 Benchmark]: Witness Printer took 36.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:59,279 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 516.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.50 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 432.43 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: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 818.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. * Witness Printer took 36.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 524]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int val; [L515] int length = __VERIFIER_nondet_int(); [L516] COND TRUE length < 1 [L516] length = 1 VAL [length=1] [L517] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={1:0}, arr={1:0}, length=1] [L518] COND FALSE !(!arr) [L519] i=0 VAL [__builtin_alloca (length)={1:0}, arr={1:0}, i=0, length=1] [L519] COND TRUE i