./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/list-ext-properties/test-0158_1-1.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 aa779df617b83bdc7632b93a3c3bc0bbfee71559 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:05:39,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:05:39,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:05:39,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:05:39,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:05:39,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:05:39,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:05:39,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:05:39,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:05:39,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:05:39,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:05:39,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:05:39,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:05:39,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:05:39,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:05:39,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:05:39,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:05:39,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:05:39,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:05:39,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:05:39,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:05:39,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:05:39,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:05:39,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:05:39,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:05:39,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:05:39,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:05:39,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:05:39,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:05:39,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:05:39,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:05:39,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:05:39,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:05:39,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:05:39,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:05:39,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:05:39,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:05:39,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:05:39,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:05:39,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:05:39,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:05:39,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:05:39,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:05:39,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:05:39,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:05:39,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:05:39,385 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:05:39,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:05:39,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:05:39,386 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:05:39,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:05:39,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:05:39,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:05:39,387 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:05:39,387 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:05:39,388 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:05:39,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:05:39,388 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:05:39,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:05:39,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:05:39,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:05:39,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:05:39,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:05:39,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:05:39,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:05:39,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:05:39,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:05:39,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:05:39,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:05:39,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:05:39,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> aa779df617b83bdc7632b93a3c3bc0bbfee71559 [2020-10-19 18:05:39,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:05:39,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:05:39,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:05:39,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:05:39,764 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:05:39,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2020-10-19 18:05:39,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a4a43d8/4abe135f32f64b998a3585d9e44af8e7/FLAGe8bd49e17 [2020-10-19 18:05:40,414 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:05:40,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2020-10-19 18:05:40,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a4a43d8/4abe135f32f64b998a3585d9e44af8e7/FLAGe8bd49e17 [2020-10-19 18:05:40,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a4a43d8/4abe135f32f64b998a3585d9e44af8e7 [2020-10-19 18:05:40,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:05:40,740 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:05:40,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:05:40,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:05:40,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:05:40,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:05:40" (1/1) ... [2020-10-19 18:05:40,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b46cba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:40, skipping insertion in model container [2020-10-19 18:05:40,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:05:40" (1/1) ... [2020-10-19 18:05:40,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:05:40,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:05:41,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:05:41,273 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:05:41,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:05:41,387 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:05:41,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:41 WrapperNode [2020-10-19 18:05:41,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:05:41,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:05:41,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:05:41,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:05:41,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:41" (1/1) ... [2020-10-19 18:05:41,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:41" (1/1) ... [2020-10-19 18:05:41,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:41" (1/1) ... [2020-10-19 18:05:41,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:41" (1/1) ... [2020-10-19 18:05:41,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:41" (1/1) ... [2020-10-19 18:05:41,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:41" (1/1) ... [2020-10-19 18:05:41,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:41" (1/1) ... [2020-10-19 18:05:41,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:05:41,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:05:41,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:05:41,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:05:41,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:05:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:05:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:05:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:05:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:05:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:05:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:05:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:05:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:05:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:05:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:05:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:05:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:05:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:05:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:05:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:05:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:05:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:05:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:05:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:05:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:05:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:05:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:05:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:05:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:05:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:05:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:05:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:05:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:05:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:05:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:05:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:05:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:05:41,531 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:05:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:05:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:05:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:05:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:05:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:05:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:05:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:05:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:05:41,534 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:05:41,534 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:05:41,535 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:05:41,535 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:05:41,536 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:05:41,536 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:05:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:05:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:05:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:05:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:05:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:05:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:05:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:05:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:05:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:05:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:05:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:05:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:05:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:05:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:05:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:05:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:05:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:05:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:05:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:05:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:05:41,540 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:05:41,540 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:05:41,540 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:05:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:05:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:05:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:05:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:05:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:05:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:05:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:05:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:05:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:05:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:05:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:05:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:05:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:05:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:05:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:05:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:05:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:05:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:05:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:05:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:05:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:05:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:05:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:05:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:05:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:05:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:05:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:05:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:05:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:05:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:05:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:05:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:05:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:05:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:05:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:05:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:05:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:05:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:05:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:05:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:05:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:05:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:05:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:05:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:05:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:05:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:05:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:05:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:05:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:05:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:05:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:05:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:05:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:05:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:05:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:05:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:05:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:05:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:05:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:05:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:05:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:05:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:05:42,092 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:05:42,092 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-19 18:05:42,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:42 BoogieIcfgContainer [2020-10-19 18:05:42,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:05:42,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:05:42,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:05:42,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:05:42,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:05:40" (1/3) ... [2020-10-19 18:05:42,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cccfc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:42, skipping insertion in model container [2020-10-19 18:05:42,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:41" (2/3) ... [2020-10-19 18:05:42,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cccfc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:42, skipping insertion in model container [2020-10-19 18:05:42,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:42" (3/3) ... [2020-10-19 18:05:42,106 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-1.i [2020-10-19 18:05:42,119 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:05:42,128 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-10-19 18:05:42,145 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-10-19 18:05:42,169 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:05:42,170 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:05:42,170 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:05:42,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:05:42,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:05:42,171 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:05:42,171 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:05:42,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:05:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-19 18:05:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:05:42,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:42,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:42,205 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 18:05:42,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:42,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1140282237, now seen corresponding path program 1 times [2020-10-19 18:05:42,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:42,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263475622] [2020-10-19 18:05:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:42,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:42,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263475622] [2020-10-19 18:05:42,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:42,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:05:42,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909319959] [2020-10-19 18:05:42,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:05:42,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:42,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:05:42,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:42,548 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-10-19 18:05:42,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:42,668 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-10-19 18:05:42,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:05:42,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:05:42,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:42,682 INFO L225 Difference]: With dead ends: 32 [2020-10-19 18:05:42,683 INFO L226 Difference]: Without dead ends: 29 [2020-10-19 18:05:42,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-19 18:05:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-19 18:05:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 18:05:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-19 18:05:42,730 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 7 [2020-10-19 18:05:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:42,731 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-19 18:05:42,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:05:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-19 18:05:42,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:05:42,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:42,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:42,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:05:42,733 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 18:05:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:42,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1140282236, now seen corresponding path program 1 times [2020-10-19 18:05:42,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:42,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460506587] [2020-10-19 18:05:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:42,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:42,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:42,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460506587] [2020-10-19 18:05:42,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:42,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:05:42,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425091105] [2020-10-19 18:05:42,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:05:42,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:42,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:05:42,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:42,849 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2020-10-19 18:05:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:42,926 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-10-19 18:05:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:05:42,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:05:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:42,928 INFO L225 Difference]: With dead ends: 23 [2020-10-19 18:05:42,928 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 18:05:42,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:42,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 18:05:42,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-19 18:05:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 18:05:42,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-19 18:05:42,935 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2020-10-19 18:05:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:42,936 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-19 18:05:42,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:05:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-19 18:05:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:05:42,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:42,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:42,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:05:42,939 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 18:05:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1229048927, now seen corresponding path program 1 times [2020-10-19 18:05:42,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:42,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862312996] [2020-10-19 18:05:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:43,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:43,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862312996] [2020-10-19 18:05:43,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:43,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:05:43,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488935892] [2020-10-19 18:05:43,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:43,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:43,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:43,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:43,077 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2020-10-19 18:05:43,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:43,183 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-10-19 18:05:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:05:43,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-19 18:05:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:43,185 INFO L225 Difference]: With dead ends: 22 [2020-10-19 18:05:43,186 INFO L226 Difference]: Without dead ends: 22 [2020-10-19 18:05:43,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-19 18:05:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-19 18:05:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 18:05:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-19 18:05:43,192 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2020-10-19 18:05:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:43,192 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-19 18:05:43,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:43,193 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-19 18:05:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:05:43,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:43,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:43,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:05:43,195 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 18:05:43,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:43,196 INFO L82 PathProgramCache]: Analyzing trace with hash 554189009, now seen corresponding path program 1 times [2020-10-19 18:05:43,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:43,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335611185] [2020-10-19 18:05:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:43,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:43,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335611185] [2020-10-19 18:05:43,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:43,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:05:43,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846586155] [2020-10-19 18:05:43,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:43,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:43,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:43,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:43,319 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-10-19 18:05:43,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:43,418 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-10-19 18:05:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:05:43,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-19 18:05:43,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:43,420 INFO L225 Difference]: With dead ends: 21 [2020-10-19 18:05:43,420 INFO L226 Difference]: Without dead ends: 21 [2020-10-19 18:05:43,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-19 18:05:43,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-19 18:05:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-19 18:05:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-19 18:05:43,426 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2020-10-19 18:05:43,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:43,426 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-19 18:05:43,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-19 18:05:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:05:43,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:43,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:43,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:05:43,429 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 18:05:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:43,430 INFO L82 PathProgramCache]: Analyzing trace with hash -9821, now seen corresponding path program 1 times [2020-10-19 18:05:43,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:43,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626658125] [2020-10-19 18:05:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:43,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:43,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626658125] [2020-10-19 18:05:43,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:43,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:05:43,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901862841] [2020-10-19 18:05:43,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:43,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:43,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:43,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:43,535 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 6 states. [2020-10-19 18:05:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:43,624 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-10-19 18:05:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:05:43,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-19 18:05:43,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:43,626 INFO L225 Difference]: With dead ends: 20 [2020-10-19 18:05:43,626 INFO L226 Difference]: Without dead ends: 20 [2020-10-19 18:05:43,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:43,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-19 18:05:43,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-19 18:05:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 18:05:43,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-19 18:05:43,631 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2020-10-19 18:05:43,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:43,632 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-19 18:05:43,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:43,632 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-19 18:05:43,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:05:43,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:43,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:43,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:05:43,635 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 18:05:43,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:43,635 INFO L82 PathProgramCache]: Analyzing trace with hash -304364, now seen corresponding path program 1 times [2020-10-19 18:05:43,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:43,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139289508] [2020-10-19 18:05:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:43,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:43,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139289508] [2020-10-19 18:05:43,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:43,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:05:43,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041439852] [2020-10-19 18:05:43,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:05:43,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:43,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:05:43,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:43,882 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2020-10-19 18:05:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:44,083 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-19 18:05:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:05:44,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-19 18:05:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:44,085 INFO L225 Difference]: With dead ends: 19 [2020-10-19 18:05:44,085 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:05:44,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:05:44,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:05:44,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:05:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:05:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:05:44,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-19 18:05:44,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:44,088 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:05:44,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:05:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:05:44,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:05:44,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:05:44,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:05:44 BoogieIcfgContainer [2020-10-19 18:05:44,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:05:44,097 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:05:44,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:05:44,097 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:05:44,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:42" (3/4) ... [2020-10-19 18:05:44,103 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:05:44,113 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-19 18:05:44,114 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 18:05:44,114 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-19 18:05:44,115 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-19 18:05:44,115 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-19 18:05:44,115 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-19 18:05:44,115 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 18:05:44,116 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-19 18:05:44,122 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-10-19 18:05:44,123 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-19 18:05:44,123 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:05:44,124 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:05:44,179 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:05:44,179 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:05:44,182 INFO L168 Benchmark]: Toolchain (without parser) took 3446.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 954.6 MB in the beginning and 887.7 MB in the end (delta: 66.9 MB). Peak memory consumption was 205.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:44,183 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:05:44,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:44,184 INFO L168 Benchmark]: Boogie Preprocessor took 64.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:44,185 INFO L168 Benchmark]: RCFGBuilder took 641.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:44,186 INFO L168 Benchmark]: TraceAbstraction took 1999.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 894.4 MB in the end (delta: 173.8 MB). Peak memory consumption was 173.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:44,187 INFO L168 Benchmark]: Witness Printer took 82.79 ms. Allocated memory is still 1.2 GB. Free memory was 894.4 MB in the beginning and 887.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:44,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 644.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 641.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1999.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 894.4 MB in the end (delta: 173.8 MB). Peak memory consumption was 173.8 MB. Max. memory is 11.5 GB. * Witness Printer took 82.79 ms. Allocated memory is still 1.2 GB. Free memory was 894.4 MB in the beginning and 887.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 524]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 536]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 536]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 58 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 113 SDslu, 107 SDs, 0 SdLazy, 268 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 8782 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 correct! Received shutdown request...