./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf 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/reverse_array_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 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 16:40:28,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 16:40:28,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 16:40:28,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 16:40:28,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 16:40:28,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 16:40:28,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 16:40:29,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 16:40:29,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 16:40:29,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 16:40:29,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 16:40:29,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 16:40:29,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 16:40:29,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 16:40:29,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 16:40:29,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 16:40:29,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 16:40:29,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 16:40:29,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 16:40:29,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 16:40:29,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 16:40:29,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 16:40:29,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 16:40:29,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 16:40:29,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 16:40:29,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 16:40:29,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 16:40:29,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 16:40:29,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 16:40:29,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 16:40:29,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 16:40:29,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 16:40:29,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 16:40:29,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 16:40:29,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 16:40:29,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 16:40:29,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 16:40:29,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 16:40:29,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 16:40:29,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 16:40:29,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 16:40:29,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 16:40:29,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 16:40:29,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 16:40:29,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 16:40:29,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 16:40:29,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 16:40:29,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 16:40:29,079 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 16:40:29,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 16:40:29,080 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 16:40:29,080 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 16:40:29,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 16:40:29,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 16:40:29,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 16:40:29,081 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 16:40:29,081 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 16:40:29,081 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 16:40:29,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 16:40:29,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 16:40:29,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 16:40:29,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 16:40:29,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 16:40:29,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 16:40:29,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 16:40:29,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:40:29,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 16:40:29,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 16:40:29,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 16:40:29,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 16:40:29,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 16:40:29,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 [2021-08-30 16:40:29,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 16:40:29,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 16:40:29,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 16:40:29,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 16:40:29,369 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 16:40:29,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2021-08-30 16:40:29,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0b08980/bf93fe6ded914ee9bd44d0986170cdff/FLAGccdc9063f [2021-08-30 16:40:29,792 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 16:40:29,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2021-08-30 16:40:29,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0b08980/bf93fe6ded914ee9bd44d0986170cdff/FLAGccdc9063f [2021-08-30 16:40:30,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0b08980/bf93fe6ded914ee9bd44d0986170cdff [2021-08-30 16:40:30,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 16:40:30,176 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 16:40:30,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 16:40:30,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 16:40:30,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 16:40:30,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:40:30" (1/1) ... [2021-08-30 16:40:30,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b341378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:40:30, skipping insertion in model container [2021-08-30 16:40:30,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:40:30" (1/1) ... [2021-08-30 16:40:30,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 16:40:30,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 16:40:30,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:40:30,430 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 16:40:30,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:40:30,501 INFO L208 MainTranslator]: Completed translation [2021-08-30 16:40:30,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:40:30 WrapperNode [2021-08-30 16:40:30,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 16:40:30,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 16:40:30,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 16:40:30,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 16:40:30,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:40:30" (1/1) ... [2021-08-30 16:40:30,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:40:30" (1/1) ... [2021-08-30 16:40:30,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:40:30" (1/1) ... [2021-08-30 16:40:30,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:40:30" (1/1) ... [2021-08-30 16:40:30,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:40:30" (1/1) ... [2021-08-30 16:40:30,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:40:30" (1/1) ... [2021-08-30 16:40:30,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:40:30" (1/1) ... [2021-08-30 16:40:30,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 16:40:30,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 16:40:30,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 16:40:30,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 16:40:30,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:40:30" (1/1) ... [2021-08-30 16:40:30,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:40:30,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:40:30,573 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) [2021-08-30 16:40:30,581 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 [2021-08-30 16:40:30,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 16:40:30,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 16:40:30,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 16:40:30,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 16:40:30,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 16:40:30,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 16:40:30,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 16:40:30,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 16:40:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 16:40:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 16:40:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 16:40:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 16:40:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 16:40:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 16:40:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 16:40:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 16:40:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 16:40:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 16:40:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 16:40:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 16:40:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 16:40:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 16:40:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 16:40:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 16:40:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 16:40:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 16:40:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 16:40:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 16:40:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 16:40:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 16:40:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 16:40:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 16:40:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 16:40:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 16:40:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 16:40:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 16:40:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 16:40:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 16:40:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 16:40:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 16:40:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 16:40:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 16:40:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 16:40:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 16:40:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 16:40:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 16:40:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 16:40:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 16:40:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 16:40:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 16:40:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 16:40:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 16:40:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 16:40:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 16:40:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 16:40:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 16:40:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 16:40:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 16:40:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-08-30 16:40:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 16:40:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 16:40:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 16:40:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 16:40:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 16:40:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 16:40:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 16:40:30,928 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 16:40:30,928 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-08-30 16:40:30,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:40:30 BoogieIcfgContainer [2021-08-30 16:40:30,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 16:40:30,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 16:40:30,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 16:40:30,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 16:40:30,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:40:30" (1/3) ... [2021-08-30 16:40:30,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1669d6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:40:30, skipping insertion in model container [2021-08-30 16:40:30,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:40:30" (2/3) ... [2021-08-30 16:40:30,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1669d6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:40:30, skipping insertion in model container [2021-08-30 16:40:30,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:40:30" (3/3) ... [2021-08-30 16:40:30,941 INFO L111 eAbstractionObserver]: Analyzing ICFG reverse_array_unsafe.i [2021-08-30 16:40:30,945 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 16:40:30,945 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-08-30 16:40:30,990 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 16:40:30,997 INFO L339 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, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 16:40:30,997 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-08-30 16:40:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 60 states have internal predecessors, (70), 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) [2021-08-30 16:40:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 16:40:31,028 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:40:31,029 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:40:31,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] === [2021-08-30 16:40:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:40:31,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1096953401, now seen corresponding path program 1 times [2021-08-30 16:40:31,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:40:31,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568429536] [2021-08-30 16:40:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:40:31,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:40:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:40:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:40:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:40:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:40:31,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:40:31,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568429536] [2021-08-30 16:40:31,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568429536] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:40:31,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:40:31,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 16:40:31,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115896132] [2021-08-30 16:40:31,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:40:31,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:40:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:40:31,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:40:31,341 INFO L87 Difference]: Start difference. First operand has 65 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 60 states have internal predecessors, (70), 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, 4 states have (on average 2.0) 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) [2021-08-30 16:40:31,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:40:31,572 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-08-30 16:40:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:40:31,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) 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 [2021-08-30 16:40:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:40:31,580 INFO L225 Difference]: With dead ends: 66 [2021-08-30 16:40:31,580 INFO L226 Difference]: Without dead ends: 63 [2021-08-30 16:40:31,582 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.42ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:40:31,587 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.53ms IncrementalHoareTripleChecker+Time [2021-08-30 16:40:31,588 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 9 Invalid, 139 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 184.53ms Time] [2021-08-30 16:40:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-08-30 16:40:31,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-08-30 16:40:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 59 states have internal predecessors, (66), 2 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) [2021-08-30 16:40:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2021-08-30 16:40:31,620 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 11 [2021-08-30 16:40:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:40:31,620 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2021-08-30 16:40:31,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) 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) [2021-08-30 16:40:31,620 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2021-08-30 16:40:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 16:40:31,621 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:40:31,621 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:40:31,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 16:40:31,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] === [2021-08-30 16:40:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:40:31,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893819, now seen corresponding path program 1 times [2021-08-30 16:40:31,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:40:31,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101809350] [2021-08-30 16:40:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:40:31,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:40:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 16:40:31,648 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 16:40:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 16:40:31,676 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 16:40:31,676 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 16:40:31,677 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr1REQUIRES_VIOLATION (22 of 23 remaining) [2021-08-30 16:40:31,678 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (21 of 23 remaining) [2021-08-30 16:40:31,678 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (20 of 23 remaining) [2021-08-30 16:40:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (19 of 23 remaining) [2021-08-30 16:40:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (18 of 23 remaining) [2021-08-30 16:40:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (17 of 23 remaining) [2021-08-30 16:40:31,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (16 of 23 remaining) [2021-08-30 16:40:31,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (15 of 23 remaining) [2021-08-30 16:40:31,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (14 of 23 remaining) [2021-08-30 16:40:31,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (13 of 23 remaining) [2021-08-30 16:40:31,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (12 of 23 remaining) [2021-08-30 16:40:31,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (11 of 23 remaining) [2021-08-30 16:40:31,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (10 of 23 remaining) [2021-08-30 16:40:31,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (9 of 23 remaining) [2021-08-30 16:40:31,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (8 of 23 remaining) [2021-08-30 16:40:31,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (7 of 23 remaining) [2021-08-30 16:40:31,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (6 of 23 remaining) [2021-08-30 16:40:31,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (5 of 23 remaining) [2021-08-30 16:40:31,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (4 of 23 remaining) [2021-08-30 16:40:31,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION (3 of 23 remaining) [2021-08-30 16:40:31,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (2 of 23 remaining) [2021-08-30 16:40:31,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (1 of 23 remaining) [2021-08-30 16:40:31,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ENSURES_VIOLATIONMEMORY_LEAK (0 of 23 remaining) [2021-08-30 16:40:31,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 16:40:31,700 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 16:40:31,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:40:31 BoogieIcfgContainer [2021-08-30 16:40:31,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 16:40:31,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 16:40:31,711 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 16:40:31,712 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 16:40:31,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:40:30" (3/4) ... [2021-08-30 16:40:31,714 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 16:40:31,738 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 16:40:31,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 16:40:31,739 INFO L158 Benchmark]: Toolchain (without parser) took 1562.88ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 40.4MB in the beginning and 55.0MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:40:31,739 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:40:31,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.76ms. Allocated memory is still 65.0MB. Free memory was 40.2MB in the beginning and 42.6MB in the end (delta: -2.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 16:40:31,741 INFO L158 Benchmark]: Boogie Preprocessor took 40.21ms. Allocated memory is still 65.0MB. Free memory was 42.6MB in the beginning and 40.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 16:40:31,742 INFO L158 Benchmark]: RCFGBuilder took 387.79ms. Allocated memory is still 65.0MB. Free memory was 40.2MB in the beginning and 37.2MB in the end (delta: 3.0MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-08-30 16:40:31,742 INFO L158 Benchmark]: TraceAbstraction took 778.60ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 36.8MB in the beginning and 56.6MB in the end (delta: -19.8MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2021-08-30 16:40:31,742 INFO L158 Benchmark]: Witness Printer took 26.74ms. Allocated memory is still 79.7MB. Free memory was 56.6MB in the beginning and 55.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:40:31,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.76ms. Allocated memory is still 65.0MB. Free memory was 40.2MB in the beginning and 42.6MB in the end (delta: -2.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.21ms. Allocated memory is still 65.0MB. Free memory was 42.6MB in the beginning and 40.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 387.79ms. Allocated memory is still 65.0MB. Free memory was 40.2MB in the beginning and 37.2MB in the end (delta: 3.0MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 778.60ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 36.8MB in the beginning and 56.6MB in the end (delta: -19.8MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Witness Printer took 26.74ms. Allocated memory is still 79.7MB. Free memory was 56.6MB in the beginning and 55.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L518] COND FALSE !(length % 2 == 0) VAL [length=1] [L519] int *arr = __builtin_alloca (length); [L520] int i = 0; VAL [__builtin_alloca (length)={2:0}, arr={2:0}, i=0, length=1] [L520] COND TRUE i < length [L522] arr[i] = __VERIFIER_nondet_int() - UnprovableResult [Line: 522]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 527]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 527]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 514]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 80 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 708.92ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 18.31ms, AutomataDifference: 270.93ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 13.13ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65 SdHoareTripleChecker+Valid, 184.53ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 147.29ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 4 mSDtfsCounter, 134 mSolverCounterSat, 2.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.42ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 22.72ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.73ms SsaConstructionTime, 48.83ms SatisfiabilityAnalysisTime, 174.55ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 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 RESULT: Ultimate proved your program to be incorrect! [2021-08-30 16:40:31,781 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...