./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_8.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_af28891d-6c6e-43f9-8936-5e7d243a394b/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/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_af28891d-6c6e-43f9-8936-5e7d243a394b/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/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_af28891d-6c6e-43f9-8936-5e7d243a394b/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 37d0ed05d77a0379c9ed98058bf2f327252773ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:26:25,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:25,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:26,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:26,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:26,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:26,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:26,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:26,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:26,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:26,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:26,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:26,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:26,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:26,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:26,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:26,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:26,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:26,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:26,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:26,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:26,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:26,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:26,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:26,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:26,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:26,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:26,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:26,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:26,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:26,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:26,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:26,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:26,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:26,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:26,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:26,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:26,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:26,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:26,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:26,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:26,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:26:26,095 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:26,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:26,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:26,097 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:26,097 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:26,097 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:26,098 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:26,098 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:26,098 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:26,098 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:26,099 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:26,099 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:26,099 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:26,099 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:26,100 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:26,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:26:26,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:26:26,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:26,101 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:26,101 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:26:26,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:26,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:26,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:26,102 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:26:26,102 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:26:26,103 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:26:26,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:26,103 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:26,103 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:26,104 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:26,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:26,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:26,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:26,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:26,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:26,105 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:26,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:26,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:26,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:26,106 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_af28891d-6c6e-43f9-8936-5e7d243a394b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37d0ed05d77a0379c9ed98058bf2f327252773ce [2021-10-11 02:26:26,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:26,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:26,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:26,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:26,429 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:26,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/locks/test_locks_8.c [2021-10-11 02:26:26,509 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/bin/utaipan-WLngWcDbfI/data/55c6c1688/8c38d27fa8194595a19e26bd51b6993e/FLAG0d3f71300 [2021-10-11 02:26:27,017 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:27,018 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/sv-benchmarks/c/locks/test_locks_8.c [2021-10-11 02:26:27,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/bin/utaipan-WLngWcDbfI/data/55c6c1688/8c38d27fa8194595a19e26bd51b6993e/FLAG0d3f71300 [2021-10-11 02:26:27,372 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/bin/utaipan-WLngWcDbfI/data/55c6c1688/8c38d27fa8194595a19e26bd51b6993e [2021-10-11 02:26:27,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:27,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:27,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:27,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:27,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:27,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4590488a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27, skipping insertion in model container [2021-10-11 02:26:27,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:27,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:27,619 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_af28891d-6c6e-43f9-8936-5e7d243a394b/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2021-10-11 02:26:27,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:27,633 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:27,654 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_af28891d-6c6e-43f9-8936-5e7d243a394b/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2021-10-11 02:26:27,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:27,668 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:27,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27 WrapperNode [2021-10-11 02:26:27,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:27,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:27,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:27,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:27,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:27,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:27,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:27,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:27,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... [2021-10-11 02:26:27,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:27,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:27,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:27,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:27,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/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 02:26:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:27,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:28,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:28,348 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:26:28,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:28 BoogieIcfgContainer [2021-10-11 02:26:28,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:28,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:28,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:28,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:28,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:27" (1/3) ... [2021-10-11 02:26:28,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c12fdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:28, skipping insertion in model container [2021-10-11 02:26:28,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:27" (2/3) ... [2021-10-11 02:26:28,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c12fdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:28, skipping insertion in model container [2021-10-11 02:26:28,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:28" (3/3) ... [2021-10-11 02:26:28,361 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2021-10-11 02:26:28,377 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:28,382 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:26:28,394 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:26:28,417 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:28,418 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:26:28,418 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:28,418 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:28,418 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:28,418 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:28,419 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:28,419 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:28,433 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2021-10-11 02:26:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:26:28,439 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:28,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:26:28,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:28,447 INFO L82 PathProgramCache]: Analyzing trace with hash 5986261, now seen corresponding path program 1 times [2021-10-11 02:26:28,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:28,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273731730] [2021-10-11 02:26:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:28,584 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 02:26:28,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273731730] [2021-10-11 02:26:28,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:28,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:28,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996964645] [2021-10-11 02:26:28,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:26:28,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:28,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:26:28,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:26:28,609 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2021-10-11 02:26:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:28,623 INFO L93 Difference]: Finished difference Result 25 states and 40 transitions. [2021-10-11 02:26:28,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:26:28,624 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2021-10-11 02:26:28,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:28,634 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:26:28,634 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 02:26:28,636 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 02:26:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 02:26:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-11 02:26:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 02:26:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2021-10-11 02:26:28,667 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 4 [2021-10-11 02:26:28,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:28,668 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2021-10-11 02:26:28,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:26:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2021-10-11 02:26:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:26:28,669 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:28,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:26:28,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:28,670 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:28,671 INFO L82 PathProgramCache]: Analyzing trace with hash 180432747, now seen corresponding path program 1 times [2021-10-11 02:26:28,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:28,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283622140] [2021-10-11 02:26:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:28,777 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 02:26:28,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283622140] [2021-10-11 02:26:28,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:28,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:26:28,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45753026] [2021-10-11 02:26:28,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:28,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:28,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:28,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:28,781 INFO L87 Difference]: Start difference. First operand 24 states and 39 transitions. Second operand 3 states. [2021-10-11 02:26:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:28,786 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2021-10-11 02:26:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:28,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:26:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:28,788 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:26:28,788 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:26:28,788 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 02:26:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:26:28,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 02:26:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:26:28,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 36 transitions. [2021-10-11 02:26:28,793 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 36 transitions. Word has length 5 [2021-10-11 02:26:28,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:28,793 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 36 transitions. [2021-10-11 02:26:28,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:28,793 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 36 transitions. [2021-10-11 02:26:28,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:26:28,794 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:28,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:26:28,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:28,794 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:28,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:28,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1303364557, now seen corresponding path program 1 times [2021-10-11 02:26:28,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:28,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675292889] [2021-10-11 02:26:28,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:28,878 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 02:26:28,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675292889] [2021-10-11 02:26:28,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:28,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:28,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780306527] [2021-10-11 02:26:28,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:28,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:28,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:28,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:28,886 INFO L87 Difference]: Start difference. First operand 21 states and 36 transitions. Second operand 4 states. [2021-10-11 02:26:28,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:28,929 INFO L93 Difference]: Finished difference Result 39 states and 66 transitions. [2021-10-11 02:26:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:28,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:26:28,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:28,933 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:26:28,934 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:26:28,934 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 02:26:28,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:26:28,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 21. [2021-10-11 02:26:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:26:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 35 transitions. [2021-10-11 02:26:28,946 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 35 transitions. Word has length 6 [2021-10-11 02:26:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:28,946 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 35 transitions. [2021-10-11 02:26:28,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:28,946 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 35 transitions. [2021-10-11 02:26:28,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:26:28,947 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:28,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:28,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:26:28,948 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:28,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1749809599, now seen corresponding path program 1 times [2021-10-11 02:26:28,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:28,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665177145] [2021-10-11 02:26:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:29,025 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 02:26:29,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665177145] [2021-10-11 02:26:29,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:29,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:29,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444736029] [2021-10-11 02:26:29,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:29,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:29,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:29,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:29,028 INFO L87 Difference]: Start difference. First operand 21 states and 35 transitions. Second operand 4 states. [2021-10-11 02:26:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:29,050 INFO L93 Difference]: Finished difference Result 37 states and 61 transitions. [2021-10-11 02:26:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:29,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:26:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:29,052 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:26:29,052 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 02:26:29,053 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 02:26:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 02:26:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 21. [2021-10-11 02:26:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:26:29,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 34 transitions. [2021-10-11 02:26:29,057 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 34 transitions. Word has length 7 [2021-10-11 02:26:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:29,057 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 34 transitions. [2021-10-11 02:26:29,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 34 transitions. [2021-10-11 02:26:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:26:29,058 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:29,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:29,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:26:29,059 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1590262942, now seen corresponding path program 1 times [2021-10-11 02:26:29,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:29,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592650242] [2021-10-11 02:26:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:29,107 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 02:26:29,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592650242] [2021-10-11 02:26:29,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:29,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:29,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008087501] [2021-10-11 02:26:29,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:29,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:29,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:29,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:29,110 INFO L87 Difference]: Start difference. First operand 21 states and 34 transitions. Second operand 4 states. [2021-10-11 02:26:29,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:29,130 INFO L93 Difference]: Finished difference Result 35 states and 56 transitions. [2021-10-11 02:26:29,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:29,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:26:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:29,131 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:26:29,132 INFO L226 Difference]: Without dead ends: 35 [2021-10-11 02:26:29,132 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 02:26:29,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-11 02:26:29,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2021-10-11 02:26:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:26:29,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2021-10-11 02:26:29,136 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 33 transitions. Word has length 8 [2021-10-11 02:26:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:29,136 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 33 transitions. [2021-10-11 02:26:29,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:29,137 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2021-10-11 02:26:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:26:29,137 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:29,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:29,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:26:29,138 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:29,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:29,139 INFO L82 PathProgramCache]: Analyzing trace with hash -2053296268, now seen corresponding path program 1 times [2021-10-11 02:26:29,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:29,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634096300] [2021-10-11 02:26:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:29,212 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 02:26:29,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634096300] [2021-10-11 02:26:29,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:29,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:29,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570691955] [2021-10-11 02:26:29,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:29,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:29,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:29,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:29,216 INFO L87 Difference]: Start difference. First operand 21 states and 33 transitions. Second operand 4 states. [2021-10-11 02:26:29,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:29,234 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2021-10-11 02:26:29,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:29,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:26:29,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:29,236 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:26:29,236 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:26:29,236 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 02:26:29,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:26:29,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2021-10-11 02:26:29,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:26:29,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2021-10-11 02:26:29,240 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 9 [2021-10-11 02:26:29,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:29,241 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2021-10-11 02:26:29,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:29,241 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2021-10-11 02:26:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:26:29,242 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:29,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:29,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:26:29,242 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:29,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:29,243 INFO L82 PathProgramCache]: Analyzing trace with hash 772540151, now seen corresponding path program 1 times [2021-10-11 02:26:29,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:29,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694326534] [2021-10-11 02:26:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:29,297 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 02:26:29,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694326534] [2021-10-11 02:26:29,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:29,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:29,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563447195] [2021-10-11 02:26:29,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:29,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:29,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:29,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:29,304 INFO L87 Difference]: Start difference. First operand 21 states and 32 transitions. Second operand 4 states. [2021-10-11 02:26:29,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:29,329 INFO L93 Difference]: Finished difference Result 31 states and 46 transitions. [2021-10-11 02:26:29,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:29,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:26:29,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:29,331 INFO L225 Difference]: With dead ends: 31 [2021-10-11 02:26:29,331 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:26:29,331 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 02:26:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:26:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2021-10-11 02:26:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:26:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2021-10-11 02:26:29,333 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2021-10-11 02:26:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:29,333 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2021-10-11 02:26:29,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2021-10-11 02:26:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:26:29,334 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:29,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:29,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:26:29,335 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:29,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:29,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1820843735, now seen corresponding path program 1 times [2021-10-11 02:26:29,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:29,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864108085] [2021-10-11 02:26:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:29,372 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 02:26:29,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864108085] [2021-10-11 02:26:29,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:29,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:29,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047381858] [2021-10-11 02:26:29,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:29,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:29,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:29,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:29,375 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 4 states. [2021-10-11 02:26:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:29,391 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2021-10-11 02:26:29,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:29,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:26:29,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:29,393 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:26:29,393 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:26:29,393 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 02:26:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:26:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2021-10-11 02:26:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:26:29,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2021-10-11 02:26:29,396 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 11 [2021-10-11 02:26:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:29,397 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2021-10-11 02:26:29,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:29,397 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2021-10-11 02:26:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:26:29,398 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:29,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:29,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:26:29,398 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:29,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash -611365236, now seen corresponding path program 1 times [2021-10-11 02:26:29,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:29,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008940352] [2021-10-11 02:26:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:29,437 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 02:26:29,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008940352] [2021-10-11 02:26:29,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:29,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:29,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347340608] [2021-10-11 02:26:29,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:29,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:29,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:29,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:29,439 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 4 states. [2021-10-11 02:26:29,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:29,455 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2021-10-11 02:26:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:29,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:26:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:29,478 INFO L225 Difference]: With dead ends: 27 [2021-10-11 02:26:29,478 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 02:26:29,479 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 02:26:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 02:26:29,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-10-11 02:26:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:26:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2021-10-11 02:26:29,482 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2021-10-11 02:26:29,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:29,482 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2021-10-11 02:26:29,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2021-10-11 02:26:29,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:26:29,483 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:29,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:29,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:26:29,483 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:29,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1772237090, now seen corresponding path program 1 times [2021-10-11 02:26:29,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:29,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352864525] [2021-10-11 02:26:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:29,519 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 02:26:29,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352864525] [2021-10-11 02:26:29,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:29,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:29,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25361031] [2021-10-11 02:26:29,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:29,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:29,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:29,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:29,521 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand 4 states. [2021-10-11 02:26:29,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:29,536 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2021-10-11 02:26:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:29,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 02:26:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:29,537 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:26:29,537 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:29,537 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 02:26:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:29,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:29,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-11 02:26:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:29,538 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:29,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:29,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:29,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:26:29,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:29 BoogieIcfgContainer [2021-10-11 02:26:29,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:29,544 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:29,544 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:29,544 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:29,545 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:28" (3/4) ... [2021-10-11 02:26:29,548 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:29,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-11 02:26:29,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:26:29,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:26:29,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:26:29,612 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af28891d-6c6e-43f9-8936-5e7d243a394b/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:29,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:29,613 INFO L168 Benchmark]: Toolchain (without parser) took 2235.54 ms. Allocated memory is still 117.4 MB. Free memory was 79.5 MB in the beginning and 82.0 MB in the end (delta: -2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:29,614 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 117.4 MB. Free memory is still 96.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:29,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.41 ms. Allocated memory is still 117.4 MB. Free memory was 79.3 MB in the beginning and 93.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:29,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.84 ms. Allocated memory is still 117.4 MB. Free memory was 93.6 MB in the beginning and 91.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:29,615 INFO L168 Benchmark]: Boogie Preprocessor took 28.48 ms. Allocated memory is still 117.4 MB. Free memory was 91.9 MB in the beginning and 91.0 MB in the end (delta: 922.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:29,616 INFO L168 Benchmark]: RCFGBuilder took 612.46 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 59.5 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:29,616 INFO L168 Benchmark]: TraceAbstraction took 1191.17 ms. Allocated memory is still 117.4 MB. Free memory was 59.2 MB in the beginning and 85.4 MB in the end (delta: -26.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:29,617 INFO L168 Benchmark]: Witness Printer took 67.82 ms. Allocated memory is still 117.4 MB. Free memory was 85.4 MB in the beginning and 82.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:29,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 117.4 MB. Free memory is still 96.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.41 ms. Allocated memory is still 117.4 MB. Free memory was 79.3 MB in the beginning and 93.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.84 ms. Allocated memory is still 117.4 MB. Free memory was 93.6 MB in the beginning and 91.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.48 ms. Allocated memory is still 117.4 MB. Free memory was 91.9 MB in the beginning and 91.0 MB in the end (delta: 922.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 612.46 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 59.5 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1191.17 ms. Allocated memory is still 117.4 MB. Free memory was 59.2 MB in the beginning and 85.4 MB in the end (delta: -26.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 67.82 ms. Allocated memory is still 117.4 MB. Free memory was 85.4 MB in the beginning and 82.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 135]: 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, 25 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 313 SDtfs, 233 SDslu, 338 SDs, 0 SdLazy, 72 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 10 MinimizatonAttempts, 84 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 2901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...