./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d28fd50bd3f7e49bee026aec860ad9015a4fdfba ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:57,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:57,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:57,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:57,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:57,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:57,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:57,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:57,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:57,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:57,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:57,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:57,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:57,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:57,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:57,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:57,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:57,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:57,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:57,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:57,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:57,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:57,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:57,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:57,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:57,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:57,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:57,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:57,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:57,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:57,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:57,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:57,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:57,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:57,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:57,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:57,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:57,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:57,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:57,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:57,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:57,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:32:57,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:57,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:57,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:57,689 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:57,690 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:57,690 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:57,690 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:57,690 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:57,691 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:57,691 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:57,692 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:57,693 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:57,693 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:57,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:57,694 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:57,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:32:57,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:32:57,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:57,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:57,696 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:32:57,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:57,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:57,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:57,697 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:32:57,697 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:32:57,697 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:32:57,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:57,699 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:57,699 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:57,700 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:57,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:57,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:57,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:57,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:57,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:57,702 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:57,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:57,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:57,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:57,703 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28fd50bd3f7e49bee026aec860ad9015a4fdfba [2021-10-11 02:32:57,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:58,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:58,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:58,049 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:58,050 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:58,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/locks/test_locks_5.c [2021-10-11 02:32:58,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/data/5a8d5c8f6/903a674448d441788d804c92f7e6d3c5/FLAGaeee8d357 [2021-10-11 02:32:58,579 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:58,580 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/sv-benchmarks/c/locks/test_locks_5.c [2021-10-11 02:32:58,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/data/5a8d5c8f6/903a674448d441788d804c92f7e6d3c5/FLAGaeee8d357 [2021-10-11 02:32:58,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/data/5a8d5c8f6/903a674448d441788d804c92f7e6d3c5 [2021-10-11 02:32:58,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:58,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:58,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:58,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:58,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:58,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:58" (1/1) ... [2021-10-11 02:32:59,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f4b292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:58, skipping insertion in model container [2021-10-11 02:32:59,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:58" (1/1) ... [2021-10-11 02:32:59,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:59,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:59,270 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-10-11 02:32:59,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:59,287 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:59,328 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-10-11 02:32:59,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:59,344 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:59,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59 WrapperNode [2021-10-11 02:32:59,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:59,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:59,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:59,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:59,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:59,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:59,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:59,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:59,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:59,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:59,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:59,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:59,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:59,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:32:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:59,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:59,858 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:32:59,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:59 BoogieIcfgContainer [2021-10-11 02:32:59,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:59,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:59,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:59,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:59,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:58" (1/3) ... [2021-10-11 02:32:59,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4305a49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:59, skipping insertion in model container [2021-10-11 02:32:59,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (2/3) ... [2021-10-11 02:32:59,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4305a49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:59, skipping insertion in model container [2021-10-11 02:32:59,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:59" (3/3) ... [2021-10-11 02:32:59,868 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2021-10-11 02:32:59,881 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:59,884 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:32:59,894 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:32:59,913 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:59,914 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:32:59,914 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:59,914 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:59,914 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:59,914 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:59,914 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:59,915 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-10-11 02:32:59,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:32:59,932 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:59,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:32:59,933 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:32:59,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:59,939 INFO L82 PathProgramCache]: Analyzing trace with hash 4413394, now seen corresponding path program 1 times [2021-10-11 02:32:59,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:59,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606531492] [2021-10-11 02:32:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:00,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606531492] [2021-10-11 02:33:00,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:00,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:00,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9021579] [2021-10-11 02:33:00,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:33:00,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:00,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:33:00,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:33:00,171 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2021-10-11 02:33:00,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:00,185 INFO L93 Difference]: Finished difference Result 19 states and 28 transitions. [2021-10-11 02:33:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:33:00,186 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2021-10-11 02:33:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:00,200 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:33:00,201 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:33:00,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:33:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:33:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 02:33:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:33:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2021-10-11 02:33:00,246 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 27 transitions. Word has length 4 [2021-10-11 02:33:00,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:00,246 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 27 transitions. [2021-10-11 02:33:00,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:33:00,247 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2021-10-11 02:33:00,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:33:00,248 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:00,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:33:00,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:33:00,253 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:33:00,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:00,255 INFO L82 PathProgramCache]: Analyzing trace with hash 133331544, now seen corresponding path program 1 times [2021-10-11 02:33:00,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:00,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891011031] [2021-10-11 02:33:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:00,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891011031] [2021-10-11 02:33:00,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:00,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:33:00,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301162868] [2021-10-11 02:33:00,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:00,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:00,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:00,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:00,306 INFO L87 Difference]: Start difference. First operand 18 states and 27 transitions. Second operand 3 states. [2021-10-11 02:33:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:00,309 INFO L93 Difference]: Finished difference Result 17 states and 26 transitions. [2021-10-11 02:33:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:00,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:33:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:00,311 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:33:00,311 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 02:33:00,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 02:33:00,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 02:33:00,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:33:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2021-10-11 02:33:00,315 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 5 [2021-10-11 02:33:00,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:00,316 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2021-10-11 02:33:00,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:00,316 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2021-10-11 02:33:00,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:33:00,316 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:00,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:33:00,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:33:00,317 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:33:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:00,318 INFO L82 PathProgramCache]: Analyzing trace with hash -158467929, now seen corresponding path program 1 times [2021-10-11 02:33:00,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:00,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003221763] [2021-10-11 02:33:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:00,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003221763] [2021-10-11 02:33:00,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:00,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:33:00,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720071142] [2021-10-11 02:33:00,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:00,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:00,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:00,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:00,416 INFO L87 Difference]: Start difference. First operand 15 states and 24 transitions. Second operand 4 states. [2021-10-11 02:33:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:00,454 INFO L93 Difference]: Finished difference Result 27 states and 42 transitions. [2021-10-11 02:33:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:00,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:33:00,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:00,456 INFO L225 Difference]: With dead ends: 27 [2021-10-11 02:33:00,456 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 02:33:00,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 02:33:00,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2021-10-11 02:33:00,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:33:00,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2021-10-11 02:33:00,462 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 6 [2021-10-11 02:33:00,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:00,462 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2021-10-11 02:33:00,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:00,462 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2021-10-11 02:33:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:33:00,463 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:00,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:00,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:33:00,464 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:33:00,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:00,464 INFO L82 PathProgramCache]: Analyzing trace with hash -617323535, now seen corresponding path program 1 times [2021-10-11 02:33:00,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:00,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599893580] [2021-10-11 02:33:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:00,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599893580] [2021-10-11 02:33:00,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:00,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:33:00,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842974279] [2021-10-11 02:33:00,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:00,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:00,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:00,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:00,525 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand 4 states. [2021-10-11 02:33:00,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:00,554 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2021-10-11 02:33:00,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:00,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:33:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:00,556 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:33:00,557 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 02:33:00,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:00,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 02:33:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2021-10-11 02:33:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:33:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2021-10-11 02:33:00,565 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 7 [2021-10-11 02:33:00,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:00,566 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-10-11 02:33:00,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:00,566 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 22 transitions. [2021-10-11 02:33:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:33:00,568 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:00,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:00,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:33:00,569 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:33:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:00,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1956945092, now seen corresponding path program 1 times [2021-10-11 02:33:00,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:00,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145672638] [2021-10-11 02:33:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:00,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145672638] [2021-10-11 02:33:00,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:00,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:33:00,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308395669] [2021-10-11 02:33:00,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:00,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:00,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:00,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:00,656 INFO L87 Difference]: Start difference. First operand 15 states and 22 transitions. Second operand 4 states. [2021-10-11 02:33:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:00,673 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2021-10-11 02:33:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:00,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:33:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:00,674 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:33:00,674 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:33:00,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:33:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 15. [2021-10-11 02:33:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:33:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2021-10-11 02:33:00,678 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 21 transitions. Word has length 8 [2021-10-11 02:33:00,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:00,678 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 21 transitions. [2021-10-11 02:33:00,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:00,678 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2021-10-11 02:33:00,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:33:00,679 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:00,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:00,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:33:00,679 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:33:00,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:00,680 INFO L82 PathProgramCache]: Analyzing trace with hash -535540058, now seen corresponding path program 1 times [2021-10-11 02:33:00,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:00,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718798463] [2021-10-11 02:33:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:00,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718798463] [2021-10-11 02:33:00,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:00,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:33:00,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48619148] [2021-10-11 02:33:00,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:00,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:00,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:00,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:00,720 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. Second operand 4 states. [2021-10-11 02:33:00,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:00,744 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-10-11 02:33:00,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:00,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:33:00,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:00,745 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:33:00,745 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:33:00,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:33:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2021-10-11 02:33:00,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:33:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2021-10-11 02:33:00,749 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 9 [2021-10-11 02:33:00,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:00,749 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2021-10-11 02:33:00,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2021-10-11 02:33:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:33:00,750 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:00,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:00,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:33:00,750 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:33:00,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:00,751 INFO L82 PathProgramCache]: Analyzing trace with hash 578343377, now seen corresponding path program 1 times [2021-10-11 02:33:00,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:00,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054435381] [2021-10-11 02:33:00,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:00,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054435381] [2021-10-11 02:33:00,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:00,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:33:00,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845161672] [2021-10-11 02:33:00,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:00,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:00,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:00,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:00,796 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand 4 states. [2021-10-11 02:33:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:00,810 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2021-10-11 02:33:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:00,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:33:00,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:00,811 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:33:00,811 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:33:00,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:33:00,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:33:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:33:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:33:00,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-11 02:33:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:00,817 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:33:00,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:33:00,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:33:00,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:33:00,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:33:00 BoogieIcfgContainer [2021-10-11 02:33:00,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:33:00,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:33:00,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:33:00,822 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:33:00,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:59" (3/4) ... [2021-10-11 02:33:00,825 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:33:00,839 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:33:00,840 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:33:00,840 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:33:00,840 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:33:00,884 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fae6fb9-dd2a-47f1-b360-7c2887c66bc9/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:33:00,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:33:00,886 INFO L168 Benchmark]: Toolchain (without parser) took 1909.87 ms. Allocated memory is still 96.5 MB. Free memory was 62.7 MB in the beginning and 62.2 MB in the end (delta: 479.8 kB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:00,886 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 78.8 MB in the beginning and 78.7 MB in the end (delta: 104.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:00,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.04 ms. Allocated memory is still 96.5 MB. Free memory was 62.4 MB in the beginning and 74.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:00,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.94 ms. Allocated memory is still 96.5 MB. Free memory was 74.0 MB in the beginning and 72.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:00,888 INFO L168 Benchmark]: Boogie Preprocessor took 31.38 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:00,888 INFO L168 Benchmark]: RCFGBuilder took 437.04 ms. Allocated memory is still 96.5 MB. Free memory was 71.2 MB in the beginning and 48.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:00,889 INFO L168 Benchmark]: TraceAbstraction took 959.30 ms. Allocated memory is still 96.5 MB. Free memory was 47.4 MB in the beginning and 65.2 MB in the end (delta: -17.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:00,889 INFO L168 Benchmark]: Witness Printer took 62.75 ms. Allocated memory is still 96.5 MB. Free memory was 65.2 MB in the beginning and 62.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:00,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 78.8 MB in the beginning and 78.7 MB in the end (delta: 104.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 370.04 ms. Allocated memory is still 96.5 MB. Free memory was 62.4 MB in the beginning and 74.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.94 ms. Allocated memory is still 96.5 MB. Free memory was 74.0 MB in the beginning and 72.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.38 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 437.04 ms. Allocated memory is still 96.5 MB. Free memory was 71.2 MB in the beginning and 48.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 959.30 ms. Allocated memory is still 96.5 MB. Free memory was 47.4 MB in the beginning and 65.2 MB in the end (delta: -17.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 62.75 ms. Allocated memory is still 96.5 MB. Free memory was 65.2 MB in the beginning and 62.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 148 SDtfs, 101 SDslu, 128 SDs, 0 SdLazy, 45 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 7 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1072 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...