./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/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 0.1.25-f470102 [2019-12-07 18:27:21,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:27:21,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:27:21,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:27:21,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:27:21,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:27:21,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:27:21,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:27:21,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:27:21,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:27:21,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:27:21,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:27:21,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:27:21,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:27:21,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:27:21,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:27:21,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:27:21,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:27:21,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:27:21,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:27:21,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:27:21,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:27:21,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:27:21,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:27:21,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:27:21,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:27:21,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:27:21,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:27:21,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:27:21,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:27:21,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:27:21,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:27:21,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:27:21,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:27:21,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:27:21,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:27:21,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:27:21,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:27:21,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:27:21,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:27:21,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:27:21,409 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 18:27:21,421 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:27:21,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:27:21,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:27:21,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:27:21,423 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:27:21,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:27:21,423 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:27:21,423 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:27:21,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:27:21,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:27:21,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:27:21,424 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 18:27:21,424 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 18:27:21,424 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 18:27:21,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:27:21,424 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 18:27:21,425 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:27:21,425 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:27:21,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:27:21,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:27:21,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:27:21,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:27:21,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:27:21,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:27:21,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:27:21,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:27:21,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:27:21,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:27:21,427 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/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/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 [2019-12-07 18:27:21,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:27:21,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:27:21,543 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:27:21,544 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:27:21,544 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:27:21,544 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2019-12-07 18:27:21,582 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/bin/uautomizer/data/07b5ce412/85d2fb02581143339ccb7fd2c0a67da8/FLAG0dddd7cb0 [2019-12-07 18:27:22,054 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:27:22,054 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2019-12-07 18:27:22,064 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/bin/uautomizer/data/07b5ce412/85d2fb02581143339ccb7fd2c0a67da8/FLAG0dddd7cb0 [2019-12-07 18:27:22,073 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/bin/uautomizer/data/07b5ce412/85d2fb02581143339ccb7fd2c0a67da8 [2019-12-07 18:27:22,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:27:22,076 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 18:27:22,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:27:22,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:27:22,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:27:22,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:27:22" (1/1) ... [2019-12-07 18:27:22,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c77c204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:27:22, skipping insertion in model container [2019-12-07 18:27:22,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:27:22" (1/1) ... [2019-12-07 18:27:22,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:27:22,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:27:22,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:27:22,317 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:27:22,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:27:22,374 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:27:22,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:27:22 WrapperNode [2019-12-07 18:27:22,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:27:22,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:27:22,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:27:22,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:27:22,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:27:22" (1/1) ... [2019-12-07 18:27:22,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:27:22" (1/1) ... [2019-12-07 18:27:22,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:27:22" (1/1) ... [2019-12-07 18:27:22,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:27:22" (1/1) ... [2019-12-07 18:27:22,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:27:22" (1/1) ... [2019-12-07 18:27:22,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:27:22" (1/1) ... [2019-12-07 18:27:22,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:27:22" (1/1) ... [2019-12-07 18:27:22,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:27:22,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:27:22,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:27:22,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:27:22,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:27:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/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 [2019-12-07 18:27:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 18:27:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:27:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-07 18:27:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-07 18:27:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-07 18:27:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-07 18:27:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-07 18:27:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 18:27:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-07 18:27:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-07 18:27:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-07 18:27:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-07 18:27:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-07 18:27:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-07 18:27:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-07 18:27:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-07 18:27:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-07 18:27:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-07 18:27:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-07 18:27:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-07 18:27:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-07 18:27:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-07 18:27:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-07 18:27:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-07 18:27:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-07 18:27:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-07 18:27:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-07 18:27:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-07 18:27:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 18:27:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 18:27:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:27:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:27:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:27:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 18:27:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 18:27:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:27:22,696 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:27:22,696 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-12-07 18:27:22,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:27:22 BoogieIcfgContainer [2019-12-07 18:27:22,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:27:22,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:27:22,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:27:22,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:27:22,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:27:22" (1/3) ... [2019-12-07 18:27:22,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf5c0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:27:22, skipping insertion in model container [2019-12-07 18:27:22,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:27:22" (2/3) ... [2019-12-07 18:27:22,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf5c0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:27:22, skipping insertion in model container [2019-12-07 18:27:22,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:27:22" (3/3) ... [2019-12-07 18:27:22,702 INFO L109 eAbstractionObserver]: Analyzing ICFG count_down_unsafe.i [2019-12-07 18:27:22,708 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:27:22,713 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-12-07 18:27:22,720 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-12-07 18:27:22,732 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:27:22,733 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 18:27:22,733 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:27:22,733 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:27:22,733 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:27:22,733 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:27:22,733 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:27:22,733 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:27:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-12-07 18:27:22,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:27:22,748 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:27:22,748 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:27:22,749 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 18:27:22,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:27:22,752 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2019-12-07 18:27:22,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:27:22,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071980715] [2019-12-07 18:27:22,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:27:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:27:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:27:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:27:22,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071980715] [2019-12-07 18:27:22,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:27:22,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:27:22,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230010350] [2019-12-07 18:27:22,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:27:22,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:27:22,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:27:22,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:27:22,895 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-12-07 18:27:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:27:22,975 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-12-07 18:27:22,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:27:22,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 18:27:22,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:27:22,982 INFO L225 Difference]: With dead ends: 36 [2019-12-07 18:27:22,982 INFO L226 Difference]: Without dead ends: 33 [2019-12-07 18:27:22,983 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:27:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-07 18:27:23,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-12-07 18:27:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 18:27:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-12-07 18:27:23,006 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2019-12-07 18:27:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:27:23,006 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-12-07 18:27:23,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:27:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-12-07 18:27:23,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 18:27:23,007 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:27:23,007 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:27:23,007 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 18:27:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:27:23,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2019-12-07 18:27:23,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:27:23,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317110770] [2019-12-07 18:27:23,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:27:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:27:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:27:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:27:23,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317110770] [2019-12-07 18:27:23,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:27:23,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:27:23,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825656855] [2019-12-07 18:27:23,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:27:23,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:27:23,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:27:23,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:27:23,047 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2019-12-07 18:27:23,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:27:23,089 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-12-07 18:27:23,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:27:23,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-07 18:27:23,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:27:23,089 INFO L225 Difference]: With dead ends: 29 [2019-12-07 18:27:23,090 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 18:27:23,090 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:27:23,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 18:27:23,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 18:27:23,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 18:27:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-12-07 18:27:23,093 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2019-12-07 18:27:23,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:27:23,093 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-12-07 18:27:23,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:27:23,093 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-12-07 18:27:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 18:27:23,094 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:27:23,094 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:27:23,094 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 18:27:23,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:27:23,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2019-12-07 18:27:23,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:27:23,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008579704] [2019-12-07 18:27:23,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:27:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:27:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:27:23,133 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:27:23,133 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:27:23,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:27:23 BoogieIcfgContainer [2019-12-07 18:27:23,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:27:23,147 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:27:23,147 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:27:23,147 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:27:23,148 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:27:22" (3/4) ... [2019-12-07 18:27:23,149 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 18:27:23,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1c17e55a-0782-4aa1-9363-bb48749d9088/bin/uautomizer/witness.graphml [2019-12-07 18:27:23,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:27:23,178 INFO L168 Benchmark]: Toolchain (without parser) took 1101.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 947.8 MB in the beginning and 984.7 MB in the end (delta: -36.9 MB). Peak memory consumption was 68.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:27:23,178 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:27:23,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -146.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:27:23,179 INFO L168 Benchmark]: Boogie Preprocessor took 35.97 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:27:23,179 INFO L168 Benchmark]: RCFGBuilder took 286.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:27:23,180 INFO L168 Benchmark]: TraceAbstraction took 449.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 984.7 MB in the end (delta: 54.8 MB). Peak memory consumption was 54.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:27:23,180 INFO L168 Benchmark]: Witness Printer took 29.41 ms. Allocated memory is still 1.1 GB. Free memory is still 984.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:27:23,182 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 297.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -146.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.97 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 286.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 449.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 984.7 MB in the end (delta: 54.8 MB). Peak memory consumption was 54.8 MB. Max. memory is 11.5 GB. * Witness Printer took 29.41 ms. Allocated memory is still 1.1 GB. Free memory is still 984.7 MB. 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)={2:0}, arr={2:0}, length=1] [L518] COND FALSE !(!arr) [L519] i=0 VAL [__builtin_alloca (length)={2:0}, arr={2:0}, i=0, length=1] [L519] COND TRUE i