./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 837e2aefd0844822f4a3cad7b5ee89b7191bc2c1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:26:34,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:34,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:34,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:34,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:34,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:34,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:34,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:34,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:34,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:34,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:34,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:34,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:34,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:34,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:34,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:34,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:34,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:34,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:34,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:35,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:35,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:35,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:35,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:35,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:35,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:35,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:35,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:35,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:35,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:35,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:35,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:35,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:35,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:35,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:35,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:35,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:35,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:35,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:35,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:35,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:35,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:26:35,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:35,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:35,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:35,099 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:35,099 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:35,099 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:35,100 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:35,100 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:35,100 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:35,100 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:35,100 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:35,101 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:35,101 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:35,101 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:35,101 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:35,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:26:35,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:26:35,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:35,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:35,103 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:26:35,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:35,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:35,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:35,104 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:26:35,104 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:26:35,104 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:26:35,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:35,104 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:35,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:35,105 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:35,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:35,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:35,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:35,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:35,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:35,106 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:35,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:35,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:35,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:35,107 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_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 837e2aefd0844822f4a3cad7b5ee89b7191bc2c1 [2021-10-11 02:26:35,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:35,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:35,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:35,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:35,435 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:35,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/locks/test_locks_13.c [2021-10-11 02:26:35,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/data/64cbed6eb/e7a19cfbeeea46808938812d03b833ed/FLAG39da8d58e [2021-10-11 02:26:35,956 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:35,957 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/sv-benchmarks/c/locks/test_locks_13.c [2021-10-11 02:26:35,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/data/64cbed6eb/e7a19cfbeeea46808938812d03b833ed/FLAG39da8d58e [2021-10-11 02:26:36,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/data/64cbed6eb/e7a19cfbeeea46808938812d03b833ed [2021-10-11 02:26:36,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:36,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:36,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:36,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:36,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:36,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:36" (1/1) ... [2021-10-11 02:26:36,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bdab2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36, skipping insertion in model container [2021-10-11 02:26:36,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:36" (1/1) ... [2021-10-11 02:26:36,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:36,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:36,564 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/sv-benchmarks/c/locks/test_locks_13.c[4936,4949] [2021-10-11 02:26:36,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:36,581 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:36,613 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/sv-benchmarks/c/locks/test_locks_13.c[4936,4949] [2021-10-11 02:26:36,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:36,628 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:36,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36 WrapperNode [2021-10-11 02:26:36,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:36,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:36,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:36,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:36,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36" (1/1) ... [2021-10-11 02:26:36,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36" (1/1) ... [2021-10-11 02:26:36,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:36,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:36,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:36,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:36,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36" (1/1) ... [2021-10-11 02:26:36,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36" (1/1) ... [2021-10-11 02:26:36,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36" (1/1) ... [2021-10-11 02:26:36,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36" (1/1) ... [2021-10-11 02:26:36,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36" (1/1) ... [2021-10-11 02:26:36,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36" (1/1) ... [2021-10-11 02:26:36,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36" (1/1) ... [2021-10-11 02:26:36,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:36,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:36,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:36,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:36,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:36,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:36,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:36,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:37,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:37,476 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:26:37,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:37 BoogieIcfgContainer [2021-10-11 02:26:37,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:37,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:37,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:37,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:37,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:36" (1/3) ... [2021-10-11 02:26:37,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18af1578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:37, skipping insertion in model container [2021-10-11 02:26:37,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:36" (2/3) ... [2021-10-11 02:26:37,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18af1578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:37, skipping insertion in model container [2021-10-11 02:26:37,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:37" (3/3) ... [2021-10-11 02:26:37,491 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_13.c [2021-10-11 02:26:37,510 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:37,513 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:26:37,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:26:37,555 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:37,557 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:26:37,557 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:37,558 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:37,558 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:37,558 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:37,558 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:37,558 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-10-11 02:26:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:26:37,584 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:37,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:26:37,585 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:37,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:37,591 INFO L82 PathProgramCache]: Analyzing trace with hash 8615394, now seen corresponding path program 1 times [2021-10-11 02:26:37,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:37,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249089711] [2021-10-11 02:26:37,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:37,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249089711] [2021-10-11 02:26:37,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:37,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:37,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837637000] [2021-10-11 02:26:37,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:26:37,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:37,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:26:37,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:26:37,745 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2021-10-11 02:26:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:37,759 INFO L93 Difference]: Finished difference Result 35 states and 60 transitions. [2021-10-11 02:26:37,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:26:37,760 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2021-10-11 02:26:37,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:37,769 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:26:37,769 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:26:37,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:26:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:26:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 02:26:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:26:37,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 59 transitions. [2021-10-11 02:26:37,804 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 59 transitions. Word has length 4 [2021-10-11 02:26:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:37,804 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 59 transitions. [2021-10-11 02:26:37,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:26:37,804 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 59 transitions. [2021-10-11 02:26:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:26:37,805 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:37,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:26:37,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:37,805 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:37,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:37,806 INFO L82 PathProgramCache]: Analyzing trace with hash 258934752, now seen corresponding path program 1 times [2021-10-11 02:26:37,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:37,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969476995] [2021-10-11 02:26:37,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:37,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969476995] [2021-10-11 02:26:37,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:37,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:26:37,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581408547] [2021-10-11 02:26:37,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:37,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:37,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:37,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:37,861 INFO L87 Difference]: Start difference. First operand 34 states and 59 transitions. Second operand 3 states. [2021-10-11 02:26:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:37,866 INFO L93 Difference]: Finished difference Result 33 states and 58 transitions. [2021-10-11 02:26:37,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:37,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:26:37,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:37,867 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:26:37,868 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:26:37,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:37,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:26:37,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-11 02:26:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 56 transitions. [2021-10-11 02:26:37,873 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 56 transitions. Word has length 5 [2021-10-11 02:26:37,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:37,874 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 56 transitions. [2021-10-11 02:26:37,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:37,874 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 56 transitions. [2021-10-11 02:26:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:26:37,874 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:37,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:26:37,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:37,875 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:37,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:37,876 INFO L82 PathProgramCache]: Analyzing trace with hash -555294705, now seen corresponding path program 1 times [2021-10-11 02:26:37,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:37,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019778644] [2021-10-11 02:26:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:37,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019778644] [2021-10-11 02:26:37,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:37,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:37,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87461526] [2021-10-11 02:26:37,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:37,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:37,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:37,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:37,956 INFO L87 Difference]: Start difference. First operand 31 states and 56 transitions. Second operand 4 states. [2021-10-11 02:26:37,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:37,986 INFO L93 Difference]: Finished difference Result 59 states and 106 transitions. [2021-10-11 02:26:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:37,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:26:37,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:37,988 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:26:37,988 INFO L226 Difference]: Without dead ends: 59 [2021-10-11 02:26:37,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:37,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-11 02:26:37,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2021-10-11 02:26:37,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 55 transitions. [2021-10-11 02:26:37,994 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 55 transitions. Word has length 6 [2021-10-11 02:26:37,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:37,994 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 55 transitions. [2021-10-11 02:26:37,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:37,994 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 55 transitions. [2021-10-11 02:26:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:26:37,995 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:37,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:37,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:26:37,996 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:37,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:37,996 INFO L82 PathProgramCache]: Analyzing trace with hash -34054295, now seen corresponding path program 1 times [2021-10-11 02:26:37,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:37,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272695122] [2021-10-11 02:26:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:38,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272695122] [2021-10-11 02:26:38,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:38,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:38,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626659212] [2021-10-11 02:26:38,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:38,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:38,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:38,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,090 INFO L87 Difference]: Start difference. First operand 31 states and 55 transitions. Second operand 4 states. [2021-10-11 02:26:38,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:38,124 INFO L93 Difference]: Finished difference Result 57 states and 101 transitions. [2021-10-11 02:26:38,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:38,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:26:38,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:38,126 INFO L225 Difference]: With dead ends: 57 [2021-10-11 02:26:38,126 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:26:38,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:26:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 31. [2021-10-11 02:26:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2021-10-11 02:26:38,132 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 7 [2021-10-11 02:26:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:38,133 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2021-10-11 02:26:38,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2021-10-11 02:26:38,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:26:38,134 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:38,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:38,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:26:38,134 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:38,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1055470428, now seen corresponding path program 1 times [2021-10-11 02:26:38,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:38,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001669863] [2021-10-11 02:26:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:38,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001669863] [2021-10-11 02:26:38,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:38,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:38,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735286537] [2021-10-11 02:26:38,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:38,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:38,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:38,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,199 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 4 states. [2021-10-11 02:26:38,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:38,228 INFO L93 Difference]: Finished difference Result 55 states and 96 transitions. [2021-10-11 02:26:38,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:38,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:26:38,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:38,231 INFO L225 Difference]: With dead ends: 55 [2021-10-11 02:26:38,232 INFO L226 Difference]: Without dead ends: 55 [2021-10-11 02:26:38,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-11 02:26:38,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2021-10-11 02:26:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 53 transitions. [2021-10-11 02:26:38,242 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 53 transitions. Word has length 8 [2021-10-11 02:26:38,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:38,243 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 53 transitions. [2021-10-11 02:26:38,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:38,243 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2021-10-11 02:26:38,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:26:38,243 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:38,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:38,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:26:38,244 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:38,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1640368158, now seen corresponding path program 1 times [2021-10-11 02:26:38,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:38,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673538570] [2021-10-11 02:26:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:38,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673538570] [2021-10-11 02:26:38,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:38,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:38,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991922887] [2021-10-11 02:26:38,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:38,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:38,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:38,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,344 INFO L87 Difference]: Start difference. First operand 31 states and 53 transitions. Second operand 4 states. [2021-10-11 02:26:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:38,375 INFO L93 Difference]: Finished difference Result 53 states and 91 transitions. [2021-10-11 02:26:38,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:38,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:26:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:38,379 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:26:38,379 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:26:38,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:26:38,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 31. [2021-10-11 02:26:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 52 transitions. [2021-10-11 02:26:38,384 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 52 transitions. Word has length 9 [2021-10-11 02:26:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:38,384 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 52 transitions. [2021-10-11 02:26:38,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 52 transitions. [2021-10-11 02:26:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:26:38,385 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:38,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:38,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:26:38,386 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:38,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:38,386 INFO L82 PathProgramCache]: Analyzing trace with hash -687981255, now seen corresponding path program 1 times [2021-10-11 02:26:38,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:38,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527912913] [2021-10-11 02:26:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:38,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527912913] [2021-10-11 02:26:38,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:38,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:38,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530801833] [2021-10-11 02:26:38,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:38,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:38,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:38,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,474 INFO L87 Difference]: Start difference. First operand 31 states and 52 transitions. Second operand 4 states. [2021-10-11 02:26:38,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:38,502 INFO L93 Difference]: Finished difference Result 51 states and 86 transitions. [2021-10-11 02:26:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:38,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:26:38,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:38,504 INFO L225 Difference]: With dead ends: 51 [2021-10-11 02:26:38,504 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:26:38,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:26:38,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 31. [2021-10-11 02:26:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2021-10-11 02:26:38,514 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 10 [2021-10-11 02:26:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:38,515 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2021-10-11 02:26:38,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2021-10-11 02:26:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:26:38,516 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:38,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:38,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:26:38,516 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:38,517 INFO L82 PathProgramCache]: Analyzing trace with hash 147631315, now seen corresponding path program 1 times [2021-10-11 02:26:38,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:38,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708015952] [2021-10-11 02:26:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:38,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708015952] [2021-10-11 02:26:38,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:38,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:38,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680786853] [2021-10-11 02:26:38,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:38,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:38,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:38,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,597 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2021-10-11 02:26:38,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:38,627 INFO L93 Difference]: Finished difference Result 49 states and 81 transitions. [2021-10-11 02:26:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:38,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:26:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:38,628 INFO L225 Difference]: With dead ends: 49 [2021-10-11 02:26:38,628 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:26:38,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:26:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2021-10-11 02:26:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 50 transitions. [2021-10-11 02:26:38,631 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 50 transitions. Word has length 11 [2021-10-11 02:26:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:38,632 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 50 transitions. [2021-10-11 02:26:38,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 50 transitions. [2021-10-11 02:26:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:26:38,633 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:38,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:38,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:26:38,633 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:38,634 INFO L82 PathProgramCache]: Analyzing trace with hash 281817550, now seen corresponding path program 1 times [2021-10-11 02:26:38,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:38,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856836005] [2021-10-11 02:26:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:38,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856836005] [2021-10-11 02:26:38,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:38,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:38,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143737518] [2021-10-11 02:26:38,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:38,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:38,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:38,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,699 INFO L87 Difference]: Start difference. First operand 31 states and 50 transitions. Second operand 4 states. [2021-10-11 02:26:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:38,720 INFO L93 Difference]: Finished difference Result 47 states and 76 transitions. [2021-10-11 02:26:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:38,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:26:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:38,721 INFO L225 Difference]: With dead ends: 47 [2021-10-11 02:26:38,721 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 02:26:38,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 02:26:38,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2021-10-11 02:26:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 49 transitions. [2021-10-11 02:26:38,734 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 49 transitions. Word has length 12 [2021-10-11 02:26:38,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:38,735 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 49 transitions. [2021-10-11 02:26:38,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:38,738 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2021-10-11 02:26:38,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:26:38,738 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:38,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:38,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:26:38,739 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:38,739 INFO L82 PathProgramCache]: Analyzing trace with hash 146623880, now seen corresponding path program 1 times [2021-10-11 02:26:38,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:38,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135066133] [2021-10-11 02:26:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:38,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135066133] [2021-10-11 02:26:38,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:38,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:38,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786986939] [2021-10-11 02:26:38,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:38,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:38,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:38,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,789 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2021-10-11 02:26:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:38,807 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2021-10-11 02:26:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:38,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 02:26:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:38,808 INFO L225 Difference]: With dead ends: 45 [2021-10-11 02:26:38,808 INFO L226 Difference]: Without dead ends: 45 [2021-10-11 02:26:38,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-11 02:26:38,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2021-10-11 02:26:38,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 48 transitions. [2021-10-11 02:26:38,811 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 48 transitions. Word has length 13 [2021-10-11 02:26:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:38,811 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-10-11 02:26:38,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 48 transitions. [2021-10-11 02:26:38,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:26:38,812 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:38,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:38,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:26:38,813 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:38,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:38,814 INFO L82 PathProgramCache]: Analyzing trace with hash 250587747, now seen corresponding path program 1 times [2021-10-11 02:26:38,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:38,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519566480] [2021-10-11 02:26:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:38,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519566480] [2021-10-11 02:26:38,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:38,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:38,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563395533] [2021-10-11 02:26:38,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:38,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,848 INFO L87 Difference]: Start difference. First operand 31 states and 48 transitions. Second operand 4 states. [2021-10-11 02:26:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:38,869 INFO L93 Difference]: Finished difference Result 43 states and 66 transitions. [2021-10-11 02:26:38,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:38,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-10-11 02:26:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:38,879 INFO L225 Difference]: With dead ends: 43 [2021-10-11 02:26:38,880 INFO L226 Difference]: Without dead ends: 43 [2021-10-11 02:26:38,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-11 02:26:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2021-10-11 02:26:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 47 transitions. [2021-10-11 02:26:38,888 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 47 transitions. Word has length 14 [2021-10-11 02:26:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:38,888 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 47 transitions. [2021-10-11 02:26:38,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:38,889 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 47 transitions. [2021-10-11 02:26:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:26:38,889 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:38,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:38,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:26:38,890 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:38,890 INFO L82 PathProgramCache]: Analyzing trace with hash -821499331, now seen corresponding path program 1 times [2021-10-11 02:26:38,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:38,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031133901] [2021-10-11 02:26:38,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:38,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031133901] [2021-10-11 02:26:38,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:38,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:38,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33068409] [2021-10-11 02:26:38,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:38,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:38,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:38,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,929 INFO L87 Difference]: Start difference. First operand 31 states and 47 transitions. Second operand 4 states. [2021-10-11 02:26:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:38,945 INFO L93 Difference]: Finished difference Result 41 states and 61 transitions. [2021-10-11 02:26:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:38,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-10-11 02:26:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:38,946 INFO L225 Difference]: With dead ends: 41 [2021-10-11 02:26:38,946 INFO L226 Difference]: Without dead ends: 41 [2021-10-11 02:26:38,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:38,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-11 02:26:38,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2021-10-11 02:26:38,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2021-10-11 02:26:38,952 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 46 transitions. Word has length 15 [2021-10-11 02:26:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:38,953 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 46 transitions. [2021-10-11 02:26:38,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:38,953 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 46 transitions. [2021-10-11 02:26:38,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:26:38,955 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:38,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:38,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:26:38,955 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:38,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:38,956 INFO L82 PathProgramCache]: Analyzing trace with hash 303539960, now seen corresponding path program 1 times [2021-10-11 02:26:38,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:38,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112773552] [2021-10-11 02:26:38,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:39,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112773552] [2021-10-11 02:26:39,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:39,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:39,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467811619] [2021-10-11 02:26:39,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:39,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:39,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:39,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:39,005 INFO L87 Difference]: Start difference. First operand 31 states and 46 transitions. Second operand 4 states. [2021-10-11 02:26:39,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:39,019 INFO L93 Difference]: Finished difference Result 39 states and 56 transitions. [2021-10-11 02:26:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:39,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:26:39,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:39,022 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:26:39,022 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:26:39,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:39,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:26:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2021-10-11 02:26:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2021-10-11 02:26:39,035 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 16 [2021-10-11 02:26:39,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:39,036 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2021-10-11 02:26:39,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:39,036 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2021-10-11 02:26:39,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:26:39,039 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:39,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:39,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:26:39,040 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:39,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:39,041 INFO L82 PathProgramCache]: Analyzing trace with hash 820019954, now seen corresponding path program 1 times [2021-10-11 02:26:39,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:39,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503151918] [2021-10-11 02:26:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:39,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503151918] [2021-10-11 02:26:39,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:39,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:39,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20023608] [2021-10-11 02:26:39,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:39,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:39,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:39,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:39,076 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 4 states. [2021-10-11 02:26:39,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:39,090 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2021-10-11 02:26:39,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:39,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-10-11 02:26:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:39,093 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:26:39,093 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 02:26:39,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 02:26:39,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2021-10-11 02:26:39,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2021-10-11 02:26:39,098 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 17 [2021-10-11 02:26:39,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:39,098 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-10-11 02:26:39,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:39,099 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2021-10-11 02:26:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:26:39,099 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:39,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:39,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 02:26:39,100 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:26:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:39,100 INFO L82 PathProgramCache]: Analyzing trace with hash -348969075, now seen corresponding path program 1 times [2021-10-11 02:26:39,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:39,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562473825] [2021-10-11 02:26:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:39,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:39,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562473825] [2021-10-11 02:26:39,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:39,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:39,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511234208] [2021-10-11 02:26:39,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:39,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:39,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:39,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:39,137 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand 4 states. [2021-10-11 02:26:39,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:39,151 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2021-10-11 02:26:39,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:39,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-10-11 02:26:39,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:39,153 INFO L225 Difference]: With dead ends: 31 [2021-10-11 02:26:39,153 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:39,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:39,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:39,155 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-11 02:26:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:39,156 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:39,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:39,156 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:39,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 02:26:39,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:39 BoogieIcfgContainer [2021-10-11 02:26:39,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:39,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:39,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:39,162 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:39,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:37" (3/4) ... [2021-10-11 02:26:39,166 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:39,192 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:26:39,192 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:26:39,193 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:26:39,193 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:26:39,262 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed85d531-7b26-4a68-a4ab-9c43988e2511/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:39,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:39,264 INFO L168 Benchmark]: Toolchain (without parser) took 2914.95 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 70.8 MB in the beginning and 60.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:39,265 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 104.9 MB. Free memory is still 87.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:39,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.38 ms. Allocated memory is still 104.9 MB. Free memory was 70.7 MB in the beginning and 81.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:39,266 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.44 ms. Allocated memory is still 104.9 MB. Free memory was 81.9 MB in the beginning and 80.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:39,266 INFO L168 Benchmark]: Boogie Preprocessor took 30.12 ms. Allocated memory is still 104.9 MB. Free memory was 80.2 MB in the beginning and 78.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:39,267 INFO L168 Benchmark]: RCFGBuilder took 780.44 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 81.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:39,267 INFO L168 Benchmark]: TraceAbstraction took 1678.37 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 80.7 MB in the beginning and 65.6 MB in the end (delta: 15.1 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:39,267 INFO L168 Benchmark]: Witness Printer took 100.96 ms. Allocated memory is still 125.8 MB. Free memory was 64.7 MB in the beginning and 60.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:39,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 104.9 MB. Free memory is still 87.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.38 ms. Allocated memory is still 104.9 MB. Free memory was 70.7 MB in the beginning and 81.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.44 ms. Allocated memory is still 104.9 MB. Free memory was 81.9 MB in the beginning and 80.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.12 ms. Allocated memory is still 104.9 MB. Free memory was 80.2 MB in the beginning and 78.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 780.44 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 81.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1678.37 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 80.7 MB in the beginning and 65.6 MB in the end (delta: 15.1 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. * Witness Printer took 100.96 ms. Allocated memory is still 125.8 MB. Free memory was 64.7 MB in the beginning and 60.5 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: - PositiveResult [Line: 205]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 728 SDtfs, 573 SDslu, 908 SDs, 0 SdLazy, 117 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 15 MinimizatonAttempts, 204 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 9196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...