./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG --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 dd9c6b82321d3b192dc5809ecc7ca6021855509a18ab1d23ca9eeb538976a0c0 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:25:11,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:25:11,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:25:11,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:25:11,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:25:11,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:25:11,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:25:11,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:25:11,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:25:11,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:25:11,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:25:11,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:25:11,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:25:11,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:25:12,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:25:12,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:25:12,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:25:12,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:25:12,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:25:12,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:25:12,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:25:12,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:25:12,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:25:12,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:25:12,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:25:12,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:25:12,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:25:12,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:25:12,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:25:12,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:25:12,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:25:12,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:25:12,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:25:12,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:25:12,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:25:12,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:25:12,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:25:12,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:25:12,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:25:12,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:25:12,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:25:12,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:25:12,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:25:12,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:25:12,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:25:12,074 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:25:12,074 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:25:12,074 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:25:12,074 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:25:12,074 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:25:12,075 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:25:12,075 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:25:12,075 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:25:12,075 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:25:12,075 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:25:12,076 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:25:12,076 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:25:12,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:25:12,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:25:12,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:25:12,077 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:25:12,077 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:25:12,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:25:12,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:25:12,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:25:12,078 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:25:12,078 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:25:12,079 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:25:12,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:25:12,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:25:12,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:25:12,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:25:12,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:25:12,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:25:12,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:25:12,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:25:12,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:25:12,081 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:25:12,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:25:12,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:25:12,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:25:12,082 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_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd9c6b82321d3b192dc5809ecc7ca6021855509a18ab1d23ca9eeb538976a0c0 [2021-10-29 05:25:12,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:25:12,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:25:12,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:25:12,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:25:12,384 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:25:12,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/locks/test_locks_11.c [2021-10-29 05:25:12,484 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/data/aeab7463c/330e8b0cae7c4b8fa8bb6183b0edb817/FLAGf1b16ebba [2021-10-29 05:25:13,018 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:25:13,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/sv-benchmarks/c/locks/test_locks_11.c [2021-10-29 05:25:13,040 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/data/aeab7463c/330e8b0cae7c4b8fa8bb6183b0edb817/FLAGf1b16ebba [2021-10-29 05:25:13,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/data/aeab7463c/330e8b0cae7c4b8fa8bb6183b0edb817 [2021-10-29 05:25:13,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:25:13,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:25:13,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:25:13,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:25:13,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:25:13,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bd212e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13, skipping insertion in model container [2021-10-29 05:25:13,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:25:13,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:25:13,594 WARN L228 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_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2021-10-29 05:25:13,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:25:13,608 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:25:13,634 WARN L228 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_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2021-10-29 05:25:13,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:25:13,648 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:25:13,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13 WrapperNode [2021-10-29 05:25:13,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:25:13,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:25:13,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:25:13,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:25:13,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:25:13,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:25:13,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:25:13,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:25:13,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:25:13,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:25:13,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:25:13,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:25:13,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13" (1/1) ... [2021-10-29 05:25:13,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:25:13,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:25:13,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:25:13,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:25:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:25:13,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:25:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:25:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:25:14,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:25:14,574 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 05:25:14,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:25:14 BoogieIcfgContainer [2021-10-29 05:25:14,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:25:14,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:25:14,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:25:14,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:25:14,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:25:13" (1/3) ... [2021-10-29 05:25:14,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675ef35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:25:14, skipping insertion in model container [2021-10-29 05:25:14,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:13" (2/3) ... [2021-10-29 05:25:14,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675ef35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:25:14, skipping insertion in model container [2021-10-29 05:25:14,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:25:14" (3/3) ... [2021-10-29 05:25:14,594 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2021-10-29 05:25:14,600 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:25:14,608 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 05:25:14,653 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:25:14,661 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:25:14,661 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 05:25:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:25:14,686 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:14,686 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:25:14,687 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:14,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash 7550479, now seen corresponding path program 1 times [2021-10-29 05:25:14,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:14,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198193475] [2021-10-29 05:25:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:14,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:14,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:14,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:14,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198193475] [2021-10-29 05:25:14,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198193475] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:14,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:14,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:25:14,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086483256] [2021-10-29 05:25:14,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:25:14,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:25:14,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:25:14,890 INFO L87 Difference]: Start difference. First operand has 31 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:14,906 INFO L93 Difference]: Finished difference Result 31 states and 52 transitions. [2021-10-29 05:25:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:25:14,908 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-29 05:25:14,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:14,918 INFO L225 Difference]: With dead ends: 31 [2021-10-29 05:25:14,918 INFO L226 Difference]: Without dead ends: 30 [2021-10-29 05:25:14,920 INFO L786 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 [2021-10-29 05:25:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-29 05:25:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-29 05:25:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 51 transitions. [2021-10-29 05:25:14,954 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 51 transitions. Word has length 4 [2021-10-29 05:25:14,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:14,955 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 51 transitions. [2021-10-29 05:25:14,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 51 transitions. [2021-10-29 05:25:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:25:14,956 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:14,956 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:25:14,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:25:14,957 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:14,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:14,958 INFO L85 PathProgramCache]: Analyzing trace with hash 227533950, now seen corresponding path program 1 times [2021-10-29 05:25:14,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:14,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912945451] [2021-10-29 05:25:14,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:14,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:15,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:15,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912945451] [2021-10-29 05:25:15,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912945451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:15,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:15,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:25:15,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196246790] [2021-10-29 05:25:15,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:25:15,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:15,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:25:15,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:25:15,047 INFO L87 Difference]: Start difference. First operand 30 states and 51 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:15,053 INFO L93 Difference]: Finished difference Result 29 states and 50 transitions. [2021-10-29 05:25:15,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:25:15,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-29 05:25:15,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:15,054 INFO L225 Difference]: With dead ends: 29 [2021-10-29 05:25:15,054 INFO L226 Difference]: Without dead ends: 27 [2021-10-29 05:25:15,055 INFO L786 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 [2021-10-29 05:25:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-29 05:25:15,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-29 05:25:15,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 48 transitions. [2021-10-29 05:25:15,061 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 48 transitions. Word has length 5 [2021-10-29 05:25:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:15,061 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 48 transitions. [2021-10-29 05:25:15,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 48 transitions. [2021-10-29 05:25:15,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:25:15,062 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:15,063 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:25:15,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:25:15,063 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1529800044, now seen corresponding path program 1 times [2021-10-29 05:25:15,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:15,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270264704] [2021-10-29 05:25:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:15,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:15,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:15,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270264704] [2021-10-29 05:25:15,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270264704] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:15,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:15,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:25:15,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582408719] [2021-10-29 05:25:15,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:15,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:15,178 INFO L87 Difference]: Start difference. First operand 27 states and 48 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:15,233 INFO L93 Difference]: Finished difference Result 51 states and 90 transitions. [2021-10-29 05:25:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:15,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:25:15,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:15,238 INFO L225 Difference]: With dead ends: 51 [2021-10-29 05:25:15,238 INFO L226 Difference]: Without dead ends: 51 [2021-10-29 05:25:15,238 INFO L786 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 [2021-10-29 05:25:15,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-29 05:25:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 27. [2021-10-29 05:25:15,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 47 transitions. [2021-10-29 05:25:15,244 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 47 transitions. Word has length 6 [2021-10-29 05:25:15,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:15,245 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 47 transitions. [2021-10-29 05:25:15,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 47 transitions. [2021-10-29 05:25:15,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:25:15,246 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:15,246 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:15,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:25:15,246 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:15,247 INFO L85 PathProgramCache]: Analyzing trace with hash -178948084, now seen corresponding path program 1 times [2021-10-29 05:25:15,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:15,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770113049] [2021-10-29 05:25:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:15,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:15,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:15,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770113049] [2021-10-29 05:25:15,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770113049] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:15,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:15,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:25:15,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11005916] [2021-10-29 05:25:15,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:15,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:15,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:15,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:15,317 INFO L87 Difference]: Start difference. First operand 27 states and 47 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:15,338 INFO L93 Difference]: Finished difference Result 49 states and 85 transitions. [2021-10-29 05:25:15,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:15,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:25:15,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:15,340 INFO L225 Difference]: With dead ends: 49 [2021-10-29 05:25:15,341 INFO L226 Difference]: Without dead ends: 49 [2021-10-29 05:25:15,341 INFO L786 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 [2021-10-29 05:25:15,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-29 05:25:15,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2021-10-29 05:25:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2021-10-29 05:25:15,347 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 7 [2021-10-29 05:25:15,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:15,347 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2021-10-29 05:25:15,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,348 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2021-10-29 05:25:15,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:25:15,348 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:15,348 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:15,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:25:15,349 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:15,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1252209943, now seen corresponding path program 1 times [2021-10-29 05:25:15,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:15,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634938471] [2021-10-29 05:25:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:15,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:15,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:15,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634938471] [2021-10-29 05:25:15,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634938471] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:15,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:15,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:25:15,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579658090] [2021-10-29 05:25:15,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:15,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:15,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:15,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:15,460 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:15,501 INFO L93 Difference]: Finished difference Result 47 states and 80 transitions. [2021-10-29 05:25:15,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:15,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:25:15,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:15,503 INFO L225 Difference]: With dead ends: 47 [2021-10-29 05:25:15,503 INFO L226 Difference]: Without dead ends: 47 [2021-10-29 05:25:15,503 INFO L786 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 [2021-10-29 05:25:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-29 05:25:15,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-29 05:25:15,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 45 transitions. [2021-10-29 05:25:15,509 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 45 transitions. Word has length 8 [2021-10-29 05:25:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:15,510 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 45 transitions. [2021-10-29 05:25:15,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 45 transitions. [2021-10-29 05:25:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:25:15,511 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:15,511 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:15,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:25:15,512 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash -163588863, now seen corresponding path program 1 times [2021-10-29 05:25:15,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:15,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139432408] [2021-10-29 05:25:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:15,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:15,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:15,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139432408] [2021-10-29 05:25:15,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139432408] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:15,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:15,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:25:15,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228344661] [2021-10-29 05:25:15,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:15,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:15,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:15,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:15,627 INFO L87 Difference]: Start difference. First operand 27 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:15,652 INFO L93 Difference]: Finished difference Result 45 states and 75 transitions. [2021-10-29 05:25:15,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:15,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:25:15,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:15,658 INFO L225 Difference]: With dead ends: 45 [2021-10-29 05:25:15,658 INFO L226 Difference]: Without dead ends: 45 [2021-10-29 05:25:15,659 INFO L786 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 [2021-10-29 05:25:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-29 05:25:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 27. [2021-10-29 05:25:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 44 transitions. [2021-10-29 05:25:15,665 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 44 transitions. Word has length 9 [2021-10-29 05:25:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:15,665 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 44 transitions. [2021-10-29 05:25:15,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 44 transitions. [2021-10-29 05:25:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:25:15,667 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:15,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:15,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:25:15,667 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:15,668 INFO L85 PathProgramCache]: Analyzing trace with hash -776073410, now seen corresponding path program 1 times [2021-10-29 05:25:15,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:15,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627733984] [2021-10-29 05:25:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:15,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:15,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:15,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627733984] [2021-10-29 05:25:15,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627733984] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:15,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:15,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:25:15,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797377491] [2021-10-29 05:25:15,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:15,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:15,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:15,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:15,719 INFO L87 Difference]: Start difference. First operand 27 states and 44 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:15,735 INFO L93 Difference]: Finished difference Result 43 states and 70 transitions. [2021-10-29 05:25:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:25:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:15,737 INFO L225 Difference]: With dead ends: 43 [2021-10-29 05:25:15,737 INFO L226 Difference]: Without dead ends: 43 [2021-10-29 05:25:15,738 INFO L786 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 [2021-10-29 05:25:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-29 05:25:15,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-10-29 05:25:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 43 transitions. [2021-10-29 05:25:15,741 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 43 transitions. Word has length 10 [2021-10-29 05:25:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:15,742 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 43 transitions. [2021-10-29 05:25:15,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 43 transitions. [2021-10-29 05:25:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:25:15,743 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:15,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:15,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:25:15,744 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:15,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:15,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1711742454, now seen corresponding path program 1 times [2021-10-29 05:25:15,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:15,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939990619] [2021-10-29 05:25:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:15,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:15,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:15,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939990619] [2021-10-29 05:25:15,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939990619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:15,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:15,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:25:15,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306960490] [2021-10-29 05:25:15,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:15,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:15,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:15,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:15,796 INFO L87 Difference]: Start difference. First operand 27 states and 43 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:15,831 INFO L93 Difference]: Finished difference Result 41 states and 65 transitions. [2021-10-29 05:25:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:15,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 05:25:15,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:15,832 INFO L225 Difference]: With dead ends: 41 [2021-10-29 05:25:15,832 INFO L226 Difference]: Without dead ends: 41 [2021-10-29 05:25:15,834 INFO L786 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 [2021-10-29 05:25:15,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-29 05:25:15,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 27. [2021-10-29 05:25:15,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 42 transitions. [2021-10-29 05:25:15,839 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 42 transitions. Word has length 11 [2021-10-29 05:25:15,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:15,839 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 42 transitions. [2021-10-29 05:25:15,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 42 transitions. [2021-10-29 05:25:15,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:25:15,845 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:15,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:15,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 05:25:15,846 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:15,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1524623251, now seen corresponding path program 1 times [2021-10-29 05:25:15,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:15,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573837639] [2021-10-29 05:25:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:15,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:15,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:15,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573837639] [2021-10-29 05:25:15,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573837639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:15,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:15,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:25:15,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855176477] [2021-10-29 05:25:15,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:15,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:15,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:15,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:15,915 INFO L87 Difference]: Start difference. First operand 27 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:15,938 INFO L93 Difference]: Finished difference Result 39 states and 60 transitions. [2021-10-29 05:25:15,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:15,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:25:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:15,945 INFO L225 Difference]: With dead ends: 39 [2021-10-29 05:25:15,946 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 05:25:15,950 INFO L786 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 [2021-10-29 05:25:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 05:25:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2021-10-29 05:25:15,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2021-10-29 05:25:15,955 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 41 transitions. Word has length 12 [2021-10-29 05:25:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:15,955 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 41 transitions. [2021-10-29 05:25:15,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 41 transitions. [2021-10-29 05:25:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:25:15,956 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:15,956 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:15,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-29 05:25:15,957 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:15,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:15,957 INFO L85 PathProgramCache]: Analyzing trace with hash 18895595, now seen corresponding path program 1 times [2021-10-29 05:25:15,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:15,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076981715] [2021-10-29 05:25:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:15,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:16,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:16,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076981715] [2021-10-29 05:25:16,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076981715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:16,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:16,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:25:16,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804276050] [2021-10-29 05:25:16,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:16,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:16,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:16,045 INFO L87 Difference]: Start difference. First operand 27 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:16,069 INFO L93 Difference]: Finished difference Result 37 states and 55 transitions. [2021-10-29 05:25:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:16,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 05:25:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:16,074 INFO L225 Difference]: With dead ends: 37 [2021-10-29 05:25:16,074 INFO L226 Difference]: Without dead ends: 37 [2021-10-29 05:25:16,075 INFO L786 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 [2021-10-29 05:25:16,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-29 05:25:16,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2021-10-29 05:25:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2021-10-29 05:25:16,090 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 40 transitions. Word has length 13 [2021-10-29 05:25:16,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:16,091 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 40 transitions. [2021-10-29 05:25:16,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,092 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2021-10-29 05:25:16,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:25:16,093 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:16,093 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:16,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-29 05:25:16,094 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:16,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:16,096 INFO L85 PathProgramCache]: Analyzing trace with hash 585978856, now seen corresponding path program 1 times [2021-10-29 05:25:16,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:16,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814564046] [2021-10-29 05:25:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:16,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:16,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:16,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814564046] [2021-10-29 05:25:16,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814564046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:16,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:16,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:25:16,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985509559] [2021-10-29 05:25:16,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:16,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:16,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:16,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:16,174 INFO L87 Difference]: Start difference. First operand 27 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:16,194 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2021-10-29 05:25:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:16,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:25:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:16,196 INFO L225 Difference]: With dead ends: 35 [2021-10-29 05:25:16,197 INFO L226 Difference]: Without dead ends: 35 [2021-10-29 05:25:16,197 INFO L786 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 [2021-10-29 05:25:16,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-29 05:25:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2021-10-29 05:25:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-10-29 05:25:16,202 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 14 [2021-10-29 05:25:16,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:16,202 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-29 05:25:16,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2021-10-29 05:25:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:25:16,203 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:16,203 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:16,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-29 05:25:16,204 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:16,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:16,204 INFO L85 PathProgramCache]: Analyzing trace with hash 985691104, now seen corresponding path program 1 times [2021-10-29 05:25:16,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:16,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355743667] [2021-10-29 05:25:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:16,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:16,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:16,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355743667] [2021-10-29 05:25:16,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355743667] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:16,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:16,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:25:16,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841963221] [2021-10-29 05:25:16,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:16,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:16,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:16,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:16,256 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:16,270 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2021-10-29 05:25:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:16,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 05:25:16,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:16,271 INFO L225 Difference]: With dead ends: 33 [2021-10-29 05:25:16,271 INFO L226 Difference]: Without dead ends: 33 [2021-10-29 05:25:16,272 INFO L786 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 [2021-10-29 05:25:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-29 05:25:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2021-10-29 05:25:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2021-10-29 05:25:16,274 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 15 [2021-10-29 05:25:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:16,274 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2021-10-29 05:25:16,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,275 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2021-10-29 05:25:16,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:25:16,275 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:16,275 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:16,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-29 05:25:16,276 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:25:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash 491869245, now seen corresponding path program 1 times [2021-10-29 05:25:16,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:16,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887691818] [2021-10-29 05:25:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:16,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:16,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:16,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887691818] [2021-10-29 05:25:16,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887691818] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:16,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:16,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:25:16,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846713819] [2021-10-29 05:25:16,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:16,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:16,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:16,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:16,325 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:16,340 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-10-29 05:25:16,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:16,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:25:16,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:16,341 INFO L225 Difference]: With dead ends: 27 [2021-10-29 05:25:16,341 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:25:16,342 INFO L786 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 [2021-10-29 05:25:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:25:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:25:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:25:16,343 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-29 05:25:16,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:16,343 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:25:16,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:25:16,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:25:16,348 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:25:16,348 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:25:16,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-29 05:25:16,352 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:16,353 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:25:16,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:25:16 BoogieIcfgContainer [2021-10-29 05:25:16,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:25:16,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:25:16,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:25:16,358 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:25:16,358 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:25:14" (3/4) ... [2021-10-29 05:25:16,361 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:25:16,379 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-10-29 05:25:16,380 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 05:25:16,380 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 05:25:16,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:25:16,466 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:25:16,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:25:16,468 INFO L168 Benchmark]: Toolchain (without parser) took 3128.02 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 65.6 MB in the beginning and 92.7 MB in the end (delta: -27.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:16,468 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory is still 82.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:25:16,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.98 ms. Allocated memory is still 104.9 MB. Free memory was 65.4 MB in the beginning and 80.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:16,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.67 ms. Allocated memory is still 104.9 MB. Free memory was 80.2 MB in the beginning and 78.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:16,471 INFO L168 Benchmark]: Boogie Preprocessor took 30.53 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 76.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:16,471 INFO L168 Benchmark]: RCFGBuilder took 849.62 ms. Allocated memory is still 104.9 MB. Free memory was 76.7 MB in the beginning and 55.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:16,471 INFO L168 Benchmark]: TraceAbstraction took 1777.43 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 54.6 MB in the beginning and 96.9 MB in the end (delta: -42.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:25:16,472 INFO L168 Benchmark]: Witness Printer took 108.36 ms. Allocated memory is still 134.2 MB. Free memory was 96.9 MB in the beginning and 92.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:16,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory is still 82.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.98 ms. Allocated memory is still 104.9 MB. Free memory was 65.4 MB in the beginning and 80.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.67 ms. Allocated memory is still 104.9 MB. Free memory was 80.2 MB in the beginning and 78.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.53 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 76.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 849.62 ms. Allocated memory is still 104.9 MB. Free memory was 76.7 MB in the beginning and 55.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1777.43 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 54.6 MB in the beginning and 96.9 MB in the end (delta: -42.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 108.36 ms. Allocated memory is still 134.2 MB. Free memory was 96.9 MB in the beginning and 92.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 177]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 541 SDtfs, 419 SDslu, 650 SDs, 0 SdLazy, 105 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 49, 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, 13 MinimizatonAttempts, 150 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 543 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 05:25:16,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ef4d4c-dd7c-43f0-9ac5-8e74f279b074/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...