./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/add_last_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/add_last_unsafe.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 ......................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 08:33:37,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 08:33:37,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 08:33:37,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 08:33:37,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 08:33:37,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 08:33:37,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 08:33:37,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 08:33:37,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 08:33:37,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 08:33:37,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 08:33:37,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 08:33:37,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 08:33:37,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 08:33:37,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 08:33:37,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 08:33:37,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 08:33:37,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 08:33:37,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 08:33:37,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 08:33:37,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 08:33:37,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 08:33:37,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 08:33:37,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 08:33:37,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 08:33:37,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 08:33:37,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 08:33:37,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 08:33:37,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 08:33:37,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 08:33:37,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 08:33:37,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 08:33:37,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 08:33:37,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 08:33:37,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 08:33:37,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 08:33:37,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 08:33:37,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 08:33:37,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 08:33:37,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 08:33:37,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 08:33:37,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-07-06 08:33:37,836 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 08:33:37,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 08:33:37,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 08:33:37,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 08:33:37,841 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 08:33:37,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 08:33:37,841 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 08:33:37,841 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 08:33:37,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 08:33:37,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 08:33:37,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 08:33:37,842 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-07-06 08:33:37,842 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-07-06 08:33:37,843 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-07-06 08:33:37,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 08:33:37,843 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-07-06 08:33:37,843 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 08:33:37,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 08:33:37,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 08:33:37,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 08:33:37,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 08:33:37,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 08:33:37,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 08:33:37,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 08:33:37,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 08:33:37,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 08:33:37,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 08:33:37,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 [2021-07-06 08:33:38,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 08:33:38,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 08:33:38,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 08:33:38,103 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 08:33:38,104 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 08:33:38,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2021-07-06 08:33:38,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5a59dcba/ff65e84ad22c420d981e63a31837acdb/FLAG3854880bd [2021-07-06 08:33:38,558 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 08:33:38,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2021-07-06 08:33:38,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5a59dcba/ff65e84ad22c420d981e63a31837acdb/FLAG3854880bd [2021-07-06 08:33:38,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5a59dcba/ff65e84ad22c420d981e63a31837acdb [2021-07-06 08:33:38,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 08:33:38,593 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-06 08:33:38,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 08:33:38,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 08:33:38,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 08:33:38,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79952613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38, skipping insertion in model container [2021-07-06 08:33:38,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 08:33:38,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 08:33:38,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 08:33:38,852 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 08:33:38,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 08:33:38,923 INFO L208 MainTranslator]: Completed translation [2021-07-06 08:33:38,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38 WrapperNode [2021-07-06 08:33:38,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 08:33:38,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 08:33:38,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 08:33:38,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 08:33:38,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 08:33:38,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 08:33:38,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 08:33:38,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 08:33:38,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 08:33:38,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 08:33:39,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-06 08:33:39,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-06 08:33:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-07-06 08:33:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 08:33:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-07-06 08:33:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-07-06 08:33:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-07-06 08:33:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-07-06 08:33:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-07-06 08:33:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-07-06 08:33:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-07-06 08:33:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-07-06 08:33:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-07-06 08:33:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-07-06 08:33:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-07-06 08:33:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-07-06 08:33:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-07-06 08:33:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-07-06 08:33:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-07-06 08:33:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-07-06 08:33:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-07-06 08:33:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-07-06 08:33:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-07-06 08:33:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-07-06 08:33:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-07-06 08:33:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-07-06 08:33:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-07-06 08:33:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-07-06 08:33:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-07-06 08:33:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-07-06 08:33:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-07-06 08:33:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-07-06 08:33:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-07-06 08:33:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-07-06 08:33:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-07-06 08:33:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-07-06 08:33:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-07-06 08:33:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-07-06 08:33:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-07-06 08:33:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-07-06 08:33:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-07-06 08:33:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-07-06 08:33:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-07-06 08:33:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-07-06 08:33:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-07-06 08:33:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-07-06 08:33:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-07-06 08:33:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-07-06 08:33:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-07-06 08:33:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-07-06 08:33:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-07-06 08:33:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-07-06 08:33:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-07-06 08:33:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-07-06 08:33:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-07-06 08:33:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-07-06 08:33:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-07-06 08:33:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-07-06 08:33:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-07-06 08:33:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-07-06 08:33:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-07-06 08:33:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-07-06 08:33:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-07-06 08:33:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-07-06 08:33:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-07-06 08:33:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-07-06 08:33:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-07-06 08:33:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-07-06 08:33:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-07-06 08:33:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-07-06 08:33:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-07-06 08:33:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-07-06 08:33:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-07-06 08:33:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-07-06 08:33:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-07-06 08:33:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-07-06 08:33:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-07-06 08:33:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-07-06 08:33:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-07-06 08:33:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-07-06 08:33:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-07-06 08:33:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-07-06 08:33:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-07-06 08:33:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-07-06 08:33:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-07-06 08:33:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-07-06 08:33:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-07-06 08:33:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-07-06 08:33:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-07-06 08:33:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-07-06 08:33:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-07-06 08:33:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-07-06 08:33:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-07-06 08:33:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-07-06 08:33:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-07-06 08:33:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-07-06 08:33:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-07-06 08:33:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-07-06 08:33:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-07-06 08:33:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-07-06 08:33:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-07-06 08:33:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-07-06 08:33:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-07-06 08:33:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-07-06 08:33:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-07-06 08:33:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-07-06 08:33:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-07-06 08:33:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-07-06 08:33:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-07-06 08:33:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-07-06 08:33:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-07-06 08:33:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-07-06 08:33:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-07-06 08:33:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-07-06 08:33:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-07-06 08:33:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-07-06 08:33:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-07-06 08:33:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-07-06 08:33:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-07-06 08:33:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 08:33:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-06 08:33:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 08:33:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 08:33:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-07-06 08:33:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 08:33:39,491 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 08:33:39,491 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-07-06 08:33:39,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:33:39 BoogieIcfgContainer [2021-07-06 08:33:39,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 08:33:39,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 08:33:39,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 08:33:39,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 08:33:39,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 08:33:38" (1/3) ... [2021-07-06 08:33:39,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83c4d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 08:33:39, skipping insertion in model container [2021-07-06 08:33:39,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38" (2/3) ... [2021-07-06 08:33:39,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83c4d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 08:33:39, skipping insertion in model container [2021-07-06 08:33:39,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:33:39" (3/3) ... [2021-07-06 08:33:39,502 INFO L111 eAbstractionObserver]: Analyzing ICFG add_last_unsafe.i [2021-07-06 08:33:39,507 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 08:33:39,507 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-07-06 08:33:39,545 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr0REQUIRES_VIOLATION ======== [2021-07-06 08:33:39,552 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 08:33:39,552 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 08:33:39,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.95) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 08:33:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 08:33:39,577 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 08:33:39,577 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 08:33:39,577 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION] === [2021-07-06 08:33:39,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 08:33:39,582 INFO L82 PathProgramCache]: Analyzing trace with hash 184525140, now seen corresponding path program 1 times [2021-07-06 08:33:39,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 08:33:39,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398859021] [2021-07-06 08:33:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 08:33:39,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 08:33:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 08:33:39,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 08:33:39,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 08:33:39,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 08:33:39,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 08:33:39,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 08:33:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 08:33:39,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 08:33:39,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 08:33:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 08:33:39,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 08:33:39,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398859021] [2021-07-06 08:33:39,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398859021] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 08:33:39,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 08:33:39,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 08:33:39,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212382871] [2021-07-06 08:33:39,764 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 08:33:39,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 08:33:39,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 08:33:39,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 08:33:39,774 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.95) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 08:33:39,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 08:33:39,879 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-07-06 08:33:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 08:33:39,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-07-06 08:33:39,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 08:33:39,887 INFO L225 Difference]: With dead ends: 35 [2021-07-06 08:33:39,887 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 08:33:39,888 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 08:33:39,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 08:33:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 08:33:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 08:33:39,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 08:33:39,904 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-07-06 08:33:39,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 08:33:39,904 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 08:33:39,905 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 08:33:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 08:33:39,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 08:33:39,907 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 08:33:39,907 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 08:33:39,910 INFO L303 ceAbstractionStarter]: Result for error location mainErr0REQUIRES_VIOLATION was SAFE (1/13) [2021-07-06 08:33:39,918 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr1REQUIRES_VIOLATION ======== [2021-07-06 08:33:39,919 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 08:33:39,919 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 08:33:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.95) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 08:33:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 08:33:39,923 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 08:33:39,923 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 08:33:39,923 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION] === [2021-07-06 08:33:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 08:33:39,924 INFO L82 PathProgramCache]: Analyzing trace with hash 184525141, now seen corresponding path program 1 times [2021-07-06 08:33:39,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 08:33:39,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610502106] [2021-07-06 08:33:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 08:33:39,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 08:33:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 08:33:39,955 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 08:33:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 08:33:39,974 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 08:33:39,987 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 08:33:39,987 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-06 08:33:39,988 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 08:33:39,988 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 08:33:39,988 INFO L303 ceAbstractionStarter]: Result for error location mainErr1REQUIRES_VIOLATION was UNSAFE (2/13) [2021-07-06 08:33:39,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 08:33:39 BoogieIcfgContainer [2021-07-06 08:33:39,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 08:33:40,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 08:33:40,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 08:33:40,002 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 08:33:40,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:33:39" (3/4) ... [2021-07-06 08:33:40,003 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-06 08:33:40,022 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 08:33:40,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 08:33:40,023 INFO L168 Benchmark]: Toolchain (without parser) took 1429.68 ms. Allocated memory was 54.5 MB in the beginning and 86.0 MB in the end (delta: 31.5 MB). Free memory was 30.5 MB in the beginning and 52.3 MB in the end (delta: -21.7 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-07-06 08:33:40,023 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 54.5 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 08:33:40,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.17 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 30.4 MB in the beginning and 43.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-07-06 08:33:40,024 INFO L168 Benchmark]: Boogie Preprocessor took 58.94 ms. Allocated memory is still 71.3 MB. Free memory was 43.6 MB in the beginning and 41.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 08:33:40,025 INFO L168 Benchmark]: RCFGBuilder took 507.83 ms. Allocated memory is still 71.3 MB. Free memory was 41.1 MB in the beginning and 37.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-07-06 08:33:40,025 INFO L168 Benchmark]: TraceAbstraction took 504.80 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 36.9 MB in the beginning and 54.0 MB in the end (delta: -17.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 08:33:40,025 INFO L168 Benchmark]: Witness Printer took 22.31 ms. Allocated memory is still 86.0 MB. Free memory was 54.0 MB in the beginning and 52.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 08:33:40,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 54.5 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.17 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 30.4 MB in the beginning and 43.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.94 ms. Allocated memory is still 71.3 MB. Free memory was 43.6 MB in the beginning and 41.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 507.83 ms. Allocated memory is still 71.3 MB. Free memory was 41.1 MB in the beginning and 37.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 504.80 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 36.9 MB in the beginning and 54.0 MB in the end (delta: -17.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 22.31 ms. Allocated memory is still 86.0 MB. Free memory was 54.0 MB in the beginning and 52.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 [L515] length = 1 VAL [length=1] [L516] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={2:0}, arr={2:0}, length=1] [L517] COND FALSE !(!arr) [L518] int *a = arr; [L520] int k = 0; VAL [__builtin_alloca (length)={2:0}, a={2:0}, arr={2:0}, k=0, length=1] [L520] COND TRUE k < length [L522] arr[k] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0REQUIRES_VIOLATION CFG has 8 procedures, 53 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 370.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 11.7ms, AutomataDifference: 123.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 24 SDslu, 8 SDs, 0 SdLazy, 55 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.0ms SsaConstructionTime, 21.0ms SatisfiabilityAnalysisTime, 85.6ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 31 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr1REQUIRES_VIOLATION CFG has 8 procedures, 53 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 70.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5ms SsaConstructionTime, 22.6ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-07-06 08:33:40,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...