./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan --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 6423b7e5fbcc52c08e52aff49c79db620dd407c4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:44,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:44,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:44,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:44,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:44,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:44,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:44,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:44,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:44,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:44,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:44,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:44,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:44,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:44,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:44,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:44,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:44,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:44,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:44,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:44,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:44,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:44,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:44,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:44,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:44,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:44,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:44,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:44,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:44,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:44,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:44,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:44,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:44,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:44,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:44,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:44,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:44,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:44,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:44,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:44,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:44,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:05:44,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:44,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:44,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:44,863 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:44,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:44,863 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:44,864 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:44,864 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:44,864 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:44,864 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:44,865 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:44,865 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:44,866 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:44,866 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:44,866 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:44,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:05:44,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:05:44,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:44,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:44,868 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:05:44,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:44,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:44,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:44,869 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:05:44,869 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:05:44,869 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:05:44,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:44,870 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:44,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:44,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:44,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:44,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:44,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:44,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:44,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:44,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:44,872 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:44,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:44,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:44,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:44,873 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-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6423b7e5fbcc52c08e52aff49c79db620dd407c4 [2020-11-22 13:05:45,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:45,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:45,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:45,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:45,154 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:45,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_10.c [2020-11-22 13:05:45,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/data/5011f4950/c3a9225732ba4dbe99da1837a9266817/FLAG14eb7ba64 [2020-11-22 13:05:45,744 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:45,760 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/sv-benchmarks/c/locks/test_locks_10.c [2020-11-22 13:05:45,772 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/data/5011f4950/c3a9225732ba4dbe99da1837a9266817/FLAG14eb7ba64 [2020-11-22 13:05:46,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/data/5011f4950/c3a9225732ba4dbe99da1837a9266817 [2020-11-22 13:05:46,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:46,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:46,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:46,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:46,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:46,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:46" (1/1) ... [2020-11-22 13:05:46,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1b230a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46, skipping insertion in model container [2020-11-22 13:05:46,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:46" (1/1) ... [2020-11-22 13:05:46,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:46,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:46,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:46,389 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:46,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:46,426 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:46,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46 WrapperNode [2020-11-22 13:05:46,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:46,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:46,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:46,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:46,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46" (1/1) ... [2020-11-22 13:05:46,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46" (1/1) ... [2020-11-22 13:05:46,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:46,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:46,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:46,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:46,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46" (1/1) ... [2020-11-22 13:05:46,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46" (1/1) ... [2020-11-22 13:05:46,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46" (1/1) ... [2020-11-22 13:05:46,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46" (1/1) ... [2020-11-22 13:05:46,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46" (1/1) ... [2020-11-22 13:05:46,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46" (1/1) ... [2020-11-22 13:05:46,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46" (1/1) ... [2020-11-22 13:05:46,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:46,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:46,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:46,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:46,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/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 [2020-11-22 13:05:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:47,438 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:47,438 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-22 13:05:47,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:47 BoogieIcfgContainer [2020-11-22 13:05:47,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:47,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:47,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:47,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:47,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:46" (1/3) ... [2020-11-22 13:05:47,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ff1b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:47, skipping insertion in model container [2020-11-22 13:05:47,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:46" (2/3) ... [2020-11-22 13:05:47,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ff1b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:47, skipping insertion in model container [2020-11-22 13:05:47,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:47" (3/3) ... [2020-11-22 13:05:47,448 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-11-22 13:05:47,474 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:47,478 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:05:47,489 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:05:47,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:47,508 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:05:47,508 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:47,508 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:47,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:47,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:47,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:47,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:47,521 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-22 13:05:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:05:47,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:47,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:05:47,527 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:47,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:47,532 INFO L82 PathProgramCache]: Analyzing trace with hash 7084813, now seen corresponding path program 1 times [2020-11-22 13:05:47,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:47,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151824125] [2020-11-22 13:05:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:47,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151824125] [2020-11-22 13:05:47,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:47,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:47,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518353463] [2020-11-22 13:05:47,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:05:47,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:47,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:05:47,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:47,702 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-22 13:05:47,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:47,715 INFO L93 Difference]: Finished difference Result 29 states and 48 transitions. [2020-11-22 13:05:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:05:47,716 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-11-22 13:05:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:47,724 INFO L225 Difference]: With dead ends: 29 [2020-11-22 13:05:47,725 INFO L226 Difference]: Without dead ends: 28 [2020-11-22 13:05:47,726 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 [2020-11-22 13:05:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-22 13:05:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-22 13:05:47,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-22 13:05:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2020-11-22 13:05:47,756 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 4 [2020-11-22 13:05:47,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:47,757 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2020-11-22 13:05:47,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:05:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2020-11-22 13:05:47,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:05:47,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:47,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:05:47,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:47,758 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:47,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:47,759 INFO L82 PathProgramCache]: Analyzing trace with hash 213680593, now seen corresponding path program 1 times [2020-11-22 13:05:47,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:47,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441502641] [2020-11-22 13:05:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:47,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441502641] [2020-11-22 13:05:47,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:47,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:05:47,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316697589] [2020-11-22 13:05:47,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:47,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:47,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:47,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:47,821 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 3 states. [2020-11-22 13:05:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:47,831 INFO L93 Difference]: Finished difference Result 27 states and 46 transitions. [2020-11-22 13:05:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:47,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-22 13:05:47,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:47,833 INFO L225 Difference]: With dead ends: 27 [2020-11-22 13:05:47,833 INFO L226 Difference]: Without dead ends: 25 [2020-11-22 13:05:47,834 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 [2020-11-22 13:05:47,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-22 13:05:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-22 13:05:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:05:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 44 transitions. [2020-11-22 13:05:47,838 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 44 transitions. Word has length 5 [2020-11-22 13:05:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:47,838 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 44 transitions. [2020-11-22 13:05:47,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:47,839 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 44 transitions. [2020-11-22 13:05:47,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:05:47,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:47,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:05:47,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:47,840 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:47,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1959719934, now seen corresponding path program 1 times [2020-11-22 13:05:47,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:47,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353942332] [2020-11-22 13:05:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:47,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:47,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353942332] [2020-11-22 13:05:47,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:47,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:47,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316166006] [2020-11-22 13:05:47,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:47,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:47,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:47,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:47,924 INFO L87 Difference]: Start difference. First operand 25 states and 44 transitions. Second operand 4 states. [2020-11-22 13:05:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:47,963 INFO L93 Difference]: Finished difference Result 47 states and 82 transitions. [2020-11-22 13:05:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:47,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 13:05:47,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:47,966 INFO L225 Difference]: With dead ends: 47 [2020-11-22 13:05:47,966 INFO L226 Difference]: Without dead ends: 47 [2020-11-22 13:05:47,966 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 [2020-11-22 13:05:47,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-22 13:05:47,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 25. [2020-11-22 13:05:47,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:05:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 43 transitions. [2020-11-22 13:05:47,970 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 43 transitions. Word has length 6 [2020-11-22 13:05:47,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:47,971 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 43 transitions. [2020-11-22 13:05:47,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:47,971 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 43 transitions. [2020-11-22 13:05:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:05:47,971 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:47,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:47,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:05:47,971 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:47,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:47,972 INFO L82 PathProgramCache]: Analyzing trace with hash -621562462, now seen corresponding path program 1 times [2020-11-22 13:05:47,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:47,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365366171] [2020-11-22 13:05:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:48,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365366171] [2020-11-22 13:05:48,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:48,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:48,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983383047] [2020-11-22 13:05:48,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:48,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:48,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:48,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:48,071 INFO L87 Difference]: Start difference. First operand 25 states and 43 transitions. Second operand 4 states. [2020-11-22 13:05:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,101 INFO L93 Difference]: Finished difference Result 45 states and 77 transitions. [2020-11-22 13:05:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:48,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 13:05:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,103 INFO L225 Difference]: With dead ends: 45 [2020-11-22 13:05:48,103 INFO L226 Difference]: Without dead ends: 45 [2020-11-22 13:05:48,103 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 [2020-11-22 13:05:48,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-22 13:05:48,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 25. [2020-11-22 13:05:48,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:05:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 42 transitions. [2020-11-22 13:05:48,107 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 42 transitions. Word has length 7 [2020-11-22 13:05:48,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,108 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 42 transitions. [2020-11-22 13:05:48,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:48,108 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 42 transitions. [2020-11-22 13:05:48,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:05:48,108 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:48,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:48,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:05:48,109 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:48,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:48,109 INFO L82 PathProgramCache]: Analyzing trace with hash -2088353449, now seen corresponding path program 1 times [2020-11-22 13:05:48,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:48,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306755156] [2020-11-22 13:05:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:48,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306755156] [2020-11-22 13:05:48,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:48,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:48,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52439294] [2020-11-22 13:05:48,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:48,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:48,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:48,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:48,192 INFO L87 Difference]: Start difference. First operand 25 states and 42 transitions. Second operand 4 states. [2020-11-22 13:05:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,219 INFO L93 Difference]: Finished difference Result 43 states and 72 transitions. [2020-11-22 13:05:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:48,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 13:05:48,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,221 INFO L225 Difference]: With dead ends: 43 [2020-11-22 13:05:48,221 INFO L226 Difference]: Without dead ends: 43 [2020-11-22 13:05:48,221 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 [2020-11-22 13:05:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-22 13:05:48,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 25. [2020-11-22 13:05:48,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:05:48,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 41 transitions. [2020-11-22 13:05:48,225 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 41 transitions. Word has length 8 [2020-11-22 13:05:48,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,225 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 41 transitions. [2020-11-22 13:05:48,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:48,226 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 41 transitions. [2020-11-22 13:05:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:05:48,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:48,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:48,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:05:48,226 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:48,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:48,227 INFO L82 PathProgramCache]: Analyzing trace with hash -314233449, now seen corresponding path program 1 times [2020-11-22 13:05:48,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:48,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24185429] [2020-11-22 13:05:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:48,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24185429] [2020-11-22 13:05:48,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:48,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:48,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500212761] [2020-11-22 13:05:48,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:48,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:48,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:48,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:48,297 INFO L87 Difference]: Start difference. First operand 25 states and 41 transitions. Second operand 4 states. [2020-11-22 13:05:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,320 INFO L93 Difference]: Finished difference Result 41 states and 67 transitions. [2020-11-22 13:05:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:48,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-22 13:05:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,339 INFO L225 Difference]: With dead ends: 41 [2020-11-22 13:05:48,339 INFO L226 Difference]: Without dead ends: 41 [2020-11-22 13:05:48,340 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 [2020-11-22 13:05:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-22 13:05:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 25. [2020-11-22 13:05:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:05:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 40 transitions. [2020-11-22 13:05:48,343 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 40 transitions. Word has length 9 [2020-11-22 13:05:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,343 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 40 transitions. [2020-11-22 13:05:48,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:48,343 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 40 transitions. [2020-11-22 13:05:48,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:05:48,344 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:48,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:48,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:05:48,344 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:48,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:48,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1151087956, now seen corresponding path program 1 times [2020-11-22 13:05:48,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:48,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206919757] [2020-11-22 13:05:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:48,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206919757] [2020-11-22 13:05:48,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:48,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:48,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578911191] [2020-11-22 13:05:48,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:48,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:48,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:48,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:48,416 INFO L87 Difference]: Start difference. First operand 25 states and 40 transitions. Second operand 4 states. [2020-11-22 13:05:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,475 INFO L93 Difference]: Finished difference Result 39 states and 62 transitions. [2020-11-22 13:05:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:48,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-22 13:05:48,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,476 INFO L225 Difference]: With dead ends: 39 [2020-11-22 13:05:48,476 INFO L226 Difference]: Without dead ends: 39 [2020-11-22 13:05:48,477 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 [2020-11-22 13:05:48,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-22 13:05:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 25. [2020-11-22 13:05:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:05:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 39 transitions. [2020-11-22 13:05:48,480 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 39 transitions. Word has length 10 [2020-11-22 13:05:48,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,480 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 39 transitions. [2020-11-22 13:05:48,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:48,480 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 39 transitions. [2020-11-22 13:05:48,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:05:48,481 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:48,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:48,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:05:48,481 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:48,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1323773556, now seen corresponding path program 1 times [2020-11-22 13:05:48,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:48,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431091043] [2020-11-22 13:05:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:48,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431091043] [2020-11-22 13:05:48,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:48,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:48,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028560229] [2020-11-22 13:05:48,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:48,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:48,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:48,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:48,522 INFO L87 Difference]: Start difference. First operand 25 states and 39 transitions. Second operand 4 states. [2020-11-22 13:05:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,558 INFO L93 Difference]: Finished difference Result 37 states and 57 transitions. [2020-11-22 13:05:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:48,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 13:05:48,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,559 INFO L225 Difference]: With dead ends: 37 [2020-11-22 13:05:48,559 INFO L226 Difference]: Without dead ends: 37 [2020-11-22 13:05:48,560 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 [2020-11-22 13:05:48,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-22 13:05:48,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2020-11-22 13:05:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:05:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 38 transitions. [2020-11-22 13:05:48,566 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 38 transitions. Word has length 11 [2020-11-22 13:05:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,566 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 38 transitions. [2020-11-22 13:05:48,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:48,567 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 38 transitions. [2020-11-22 13:05:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:05:48,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:48,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:48,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:05:48,568 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:48,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:48,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1912907777, now seen corresponding path program 1 times [2020-11-22 13:05:48,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:48,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533548739] [2020-11-22 13:05:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:48,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533548739] [2020-11-22 13:05:48,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:48,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:48,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247032022] [2020-11-22 13:05:48,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:48,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:48,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:48,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:48,648 INFO L87 Difference]: Start difference. First operand 25 states and 38 transitions. Second operand 4 states. [2020-11-22 13:05:48,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,682 INFO L93 Difference]: Finished difference Result 35 states and 52 transitions. [2020-11-22 13:05:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:48,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-22 13:05:48,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,683 INFO L225 Difference]: With dead ends: 35 [2020-11-22 13:05:48,683 INFO L226 Difference]: Without dead ends: 35 [2020-11-22 13:05:48,683 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 [2020-11-22 13:05:48,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-22 13:05:48,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2020-11-22 13:05:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:05:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 37 transitions. [2020-11-22 13:05:48,686 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 37 transitions. Word has length 12 [2020-11-22 13:05:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,687 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 37 transitions. [2020-11-22 13:05:48,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2020-11-22 13:05:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:05:48,687 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:48,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:48,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 13:05:48,688 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:48,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:48,688 INFO L82 PathProgramCache]: Analyzing trace with hash -829185663, now seen corresponding path program 1 times [2020-11-22 13:05:48,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:48,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924299276] [2020-11-22 13:05:48,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:48,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924299276] [2020-11-22 13:05:48,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:48,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:48,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795987251] [2020-11-22 13:05:48,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:48,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:48,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:48,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:48,757 INFO L87 Difference]: Start difference. First operand 25 states and 37 transitions. Second operand 4 states. [2020-11-22 13:05:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,783 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2020-11-22 13:05:48,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:48,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-22 13:05:48,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,785 INFO L225 Difference]: With dead ends: 33 [2020-11-22 13:05:48,785 INFO L226 Difference]: Without dead ends: 33 [2020-11-22 13:05:48,785 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 [2020-11-22 13:05:48,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-22 13:05:48,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-11-22 13:05:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:05:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2020-11-22 13:05:48,788 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 36 transitions. Word has length 13 [2020-11-22 13:05:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,788 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 36 transitions. [2020-11-22 13:05:48,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2020-11-22 13:05:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:05:48,789 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:48,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:48,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 13:05:48,789 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:48,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:48,790 INFO L82 PathProgramCache]: Analyzing trace with hash 65263958, now seen corresponding path program 1 times [2020-11-22 13:05:48,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:48,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797711352] [2020-11-22 13:05:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:48,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797711352] [2020-11-22 13:05:48,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:48,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:48,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814847801] [2020-11-22 13:05:48,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:48,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:48,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:48,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:48,851 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand 4 states. [2020-11-22 13:05:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,886 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2020-11-22 13:05:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:48,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-22 13:05:48,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,887 INFO L225 Difference]: With dead ends: 31 [2020-11-22 13:05:48,888 INFO L226 Difference]: Without dead ends: 31 [2020-11-22 13:05:48,888 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 [2020-11-22 13:05:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-22 13:05:48,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2020-11-22 13:05:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:05:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-22 13:05:48,890 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 14 [2020-11-22 13:05:48,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,891 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-22 13:05:48,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-22 13:05:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:05:48,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:48,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:48,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 13:05:48,892 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:05:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:48,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2023398774, now seen corresponding path program 1 times [2020-11-22 13:05:48,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:48,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078439557] [2020-11-22 13:05:48,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:48,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078439557] [2020-11-22 13:05:48,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:48,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:48,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127415024] [2020-11-22 13:05:48,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:48,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:48,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:48,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:48,948 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-11-22 13:05:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,973 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2020-11-22 13:05:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:48,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-22 13:05:48,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,974 INFO L225 Difference]: With dead ends: 25 [2020-11-22 13:05:48,974 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:48,974 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 [2020-11-22 13:05:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:48,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:48,975 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-22 13:05:48,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,975 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:48,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:48,976 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:48,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:48,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-22 13:05:48,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:48 BoogieIcfgContainer [2020-11-22 13:05:48,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:48,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:48,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:48,980 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:48,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:47" (3/4) ... [2020-11-22 13:05:48,983 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:48,999 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-22 13:05:49,000 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 13:05:49,000 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 13:05:49,001 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:49,064 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_34481363-2886-4db2-b726-8588a7e10824/bin/utaipan/witness.graphml [2020-11-22 13:05:49,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:49,066 INFO L168 Benchmark]: Toolchain (without parser) took 2961.69 ms. Allocated memory is still 140.5 MB. Free memory was 113.1 MB in the beginning and 64.5 MB in the end (delta: 48.6 MB). Peak memory consumption was 49.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,066 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 83.9 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:49,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.18 ms. Allocated memory is still 140.5 MB. Free memory was 112.8 MB in the beginning and 116.7 MB in the end (delta: -4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.23 ms. Allocated memory is still 140.5 MB. Free memory was 116.7 MB in the beginning and 115.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,068 INFO L168 Benchmark]: Boogie Preprocessor took 23.24 ms. Allocated memory is still 140.5 MB. Free memory was 115.0 MB in the beginning and 113.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,068 INFO L168 Benchmark]: RCFGBuilder took 948.02 ms. Allocated memory is still 140.5 MB. Free memory was 113.8 MB in the beginning and 117.3 MB in the end (delta: -3.5 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,068 INFO L168 Benchmark]: TraceAbstraction took 1537.84 ms. Allocated memory is still 140.5 MB. Free memory was 116.8 MB in the beginning and 68.7 MB in the end (delta: 48.1 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,069 INFO L168 Benchmark]: Witness Printer took 84.03 ms. Allocated memory is still 140.5 MB. Free memory was 67.8 MB in the beginning and 64.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:49,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 83.9 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.18 ms. Allocated memory is still 140.5 MB. Free memory was 112.8 MB in the beginning and 116.7 MB in the end (delta: -4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.23 ms. Allocated memory is still 140.5 MB. Free memory was 116.7 MB in the beginning and 115.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.24 ms. Allocated memory is still 140.5 MB. Free memory was 115.0 MB in the beginning and 113.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 948.02 ms. Allocated memory is still 140.5 MB. Free memory was 113.8 MB in the beginning and 117.3 MB in the end (delta: -3.5 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1537.84 ms. Allocated memory is still 140.5 MB. Free memory was 116.8 MB in the beginning and 68.7 MB in the end (delta: 48.1 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. * Witness Printer took 84.03 ms. Allocated memory is still 140.5 MB. Free memory was 67.8 MB in the beginning and 64.5 MB in the end (delta: 3.3 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: 3]: 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, 29 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 458 SDtfs, 351 SDslu, 533 SDs, 0 SdLazy, 90 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 12 MinimizatonAttempts, 126 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 4862 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...