./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_15-2.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-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_15-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87d55100d8515cc1c8c9aa61ce99443e0eafb474 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:04:06,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:04:06,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:04:06,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:04:06,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:04:06,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:04:06,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:04:06,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:04:06,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:04:06,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:04:06,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:04:06,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:04:06,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:04:06,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:04:06,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:04:06,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:04:06,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:04:06,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:04:06,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:04:06,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:04:06,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:04:06,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:04:06,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:04:06,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:04:06,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:04:06,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:04:06,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:04:06,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:04:06,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:04:06,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:04:06,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:04:06,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:04:06,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:04:06,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:04:06,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:04:06,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:04:06,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:04:06,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:04:06,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:04:06,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:04:06,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:04:06,759 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 05:04:06,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:04:06,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:04:06,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:04:06,783 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:04:06,783 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:04:06,783 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:04:06,783 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:04:06,783 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:04:06,783 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:04:06,783 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:04:06,783 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:04:06,784 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:04:06,784 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:04:06,784 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:04:06,784 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:04:06,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 05:04:06,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 05:04:06,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:04:06,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:04:06,785 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 05:04:06,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:04:06,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:04:06,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:04:06,785 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 05:04:06,786 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 05:04:06,786 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 05:04:06,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:04:06,786 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:04:06,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:04:06,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:04:06,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:04:06,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:04:06,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:04:06,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:04:06,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:04:06,787 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:04:06,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:04:06,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:04:06,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:04:06,788 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87d55100d8515cc1c8c9aa61ce99443e0eafb474 [2020-12-09 05:04:06,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:04:07,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:04:07,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:04:07,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:04:07,014 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:04:07,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_15-2.c [2020-12-09 05:04:07,058 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/data/d298319f3/f9d640fa54b64c02b10e88fa6bf619db/FLAG2c2bc2e84 [2020-12-09 05:04:07,473 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:04:07,473 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/sv-benchmarks/c/locks/test_locks_15-2.c [2020-12-09 05:04:07,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/data/d298319f3/f9d640fa54b64c02b10e88fa6bf619db/FLAG2c2bc2e84 [2020-12-09 05:04:07,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/data/d298319f3/f9d640fa54b64c02b10e88fa6bf619db [2020-12-09 05:04:07,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:04:07,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:04:07,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:04:07,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:04:07,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:04:07,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:04:07" (1/1) ... [2020-12-09 05:04:07,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d5d615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07, skipping insertion in model container [2020-12-09 05:04:07,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:04:07" (1/1) ... [2020-12-09 05:04:07,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:04:07,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:04:07,653 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2020-12-09 05:04:07,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:04:07,666 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:04:07,693 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2020-12-09 05:04:07,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:04:07,705 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:04:07,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07 WrapperNode [2020-12-09 05:04:07,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:04:07,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:04:07,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:04:07,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:04:07,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07" (1/1) ... [2020-12-09 05:04:07,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07" (1/1) ... [2020-12-09 05:04:07,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:04:07,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:04:07,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:04:07,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:04:07,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07" (1/1) ... [2020-12-09 05:04:07,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07" (1/1) ... [2020-12-09 05:04:07,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07" (1/1) ... [2020-12-09 05:04:07,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07" (1/1) ... [2020-12-09 05:04:07,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07" (1/1) ... [2020-12-09 05:04:07,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07" (1/1) ... [2020-12-09 05:04:07,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07" (1/1) ... [2020-12-09 05:04:07,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:04:07,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:04:07,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:04:07,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:04:07,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:04:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:04:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:04:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:04:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:04:08,325 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:04:08,325 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 05:04:08,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:04:08 BoogieIcfgContainer [2020-12-09 05:04:08,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:04:08,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:04:08,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:04:08,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:04:08,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:04:07" (1/3) ... [2020-12-09 05:04:08,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa36d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:04:08, skipping insertion in model container [2020-12-09 05:04:08,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:04:07" (2/3) ... [2020-12-09 05:04:08,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa36d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:04:08, skipping insertion in model container [2020-12-09 05:04:08,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:04:08" (3/3) ... [2020-12-09 05:04:08,334 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.c [2020-12-09 05:04:08,344 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:04:08,347 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 05:04:08,358 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 05:04:08,378 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:04:08,378 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 05:04:08,379 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:04:08,379 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:04:08,379 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:04:08,379 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:04:08,379 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:04:08,379 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:04:08,390 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-09 05:04:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 05:04:08,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:08,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 05:04:08,395 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:08,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:08,398 INFO L82 PathProgramCache]: Analyzing trace with hash 9647635, now seen corresponding path program 1 times [2020-12-09 05:04:08,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:08,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821758004] [2020-12-09 05:04:08,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:08,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821758004] [2020-12-09 05:04:08,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:08,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:04:08,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626984054] [2020-12-09 05:04:08,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:04:08,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:08,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:04:08,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:04:08,516 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-12-09 05:04:08,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:08,525 INFO L93 Difference]: Finished difference Result 39 states and 68 transitions. [2020-12-09 05:04:08,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:04:08,526 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-12-09 05:04:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:08,533 INFO L225 Difference]: With dead ends: 39 [2020-12-09 05:04:08,533 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 05:04:08,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:04:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 05:04:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-09 05:04:08,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 05:04:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 67 transitions. [2020-12-09 05:04:08,559 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 67 transitions. Word has length 4 [2020-12-09 05:04:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:08,560 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 67 transitions. [2020-12-09 05:04:08,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:04:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 67 transitions. [2020-12-09 05:04:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 05:04:08,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:08,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 05:04:08,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:04:08,560 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:08,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:08,561 INFO L82 PathProgramCache]: Analyzing trace with hash 290335554, now seen corresponding path program 1 times [2020-12-09 05:04:08,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:08,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312224893] [2020-12-09 05:04:08,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:08,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312224893] [2020-12-09 05:04:08,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:08,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 05:04:08,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423446960] [2020-12-09 05:04:08,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:04:08,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:08,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:04:08,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:04:08,601 INFO L87 Difference]: Start difference. First operand 38 states and 67 transitions. Second operand 3 states. [2020-12-09 05:04:08,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:08,606 INFO L93 Difference]: Finished difference Result 37 states and 66 transitions. [2020-12-09 05:04:08,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:04:08,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 05:04:08,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:08,607 INFO L225 Difference]: With dead ends: 37 [2020-12-09 05:04:08,607 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 05:04:08,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:04:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 05:04:08,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-09 05:04:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 64 transitions. [2020-12-09 05:04:08,612 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 64 transitions. Word has length 5 [2020-12-09 05:04:08,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:08,613 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 64 transitions. [2020-12-09 05:04:08,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:04:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 64 transitions. [2020-12-09 05:04:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:04:08,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:08,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:04:08,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:04:08,614 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:08,614 INFO L82 PathProgramCache]: Analyzing trace with hash 419270216, now seen corresponding path program 1 times [2020-12-09 05:04:08,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:08,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82363452] [2020-12-09 05:04:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:08,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82363452] [2020-12-09 05:04:08,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:08,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:08,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240470459] [2020-12-09 05:04:08,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:08,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:08,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:08,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:08,667 INFO L87 Difference]: Start difference. First operand 35 states and 64 transitions. Second operand 4 states. [2020-12-09 05:04:08,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:08,690 INFO L93 Difference]: Finished difference Result 67 states and 122 transitions. [2020-12-09 05:04:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:08,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 05:04:08,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:08,692 INFO L225 Difference]: With dead ends: 67 [2020-12-09 05:04:08,692 INFO L226 Difference]: Without dead ends: 67 [2020-12-09 05:04:08,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:08,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-09 05:04:08,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 35. [2020-12-09 05:04:08,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:08,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 63 transitions. [2020-12-09 05:04:08,697 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 63 transitions. Word has length 6 [2020-12-09 05:04:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:08,697 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 63 transitions. [2020-12-09 05:04:08,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 63 transitions. [2020-12-09 05:04:08,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:04:08,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:08,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:08,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:04:08,698 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:08,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:08,698 INFO L82 PathProgramCache]: Analyzing trace with hash 112686536, now seen corresponding path program 1 times [2020-12-09 05:04:08,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:08,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598617243] [2020-12-09 05:04:08,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:08,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598617243] [2020-12-09 05:04:08,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:08,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:08,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859195570] [2020-12-09 05:04:08,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:08,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:08,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:08,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:08,736 INFO L87 Difference]: Start difference. First operand 35 states and 63 transitions. Second operand 4 states. [2020-12-09 05:04:08,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:08,757 INFO L93 Difference]: Finished difference Result 65 states and 117 transitions. [2020-12-09 05:04:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:08,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 05:04:08,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:08,759 INFO L225 Difference]: With dead ends: 65 [2020-12-09 05:04:08,759 INFO L226 Difference]: Without dead ends: 65 [2020-12-09 05:04:08,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:08,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-09 05:04:08,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 35. [2020-12-09 05:04:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 62 transitions. [2020-12-09 05:04:08,765 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 62 transitions. Word has length 7 [2020-12-09 05:04:08,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:08,765 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 62 transitions. [2020-12-09 05:04:08,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:08,765 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 62 transitions. [2020-12-09 05:04:08,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 05:04:08,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:08,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:08,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:04:08,766 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:08,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:08,767 INFO L82 PathProgramCache]: Analyzing trace with hash -801472611, now seen corresponding path program 1 times [2020-12-09 05:04:08,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:08,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644303180] [2020-12-09 05:04:08,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:08,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644303180] [2020-12-09 05:04:08,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:08,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:08,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833424254] [2020-12-09 05:04:08,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:08,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:08,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:08,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:08,811 INFO L87 Difference]: Start difference. First operand 35 states and 62 transitions. Second operand 4 states. [2020-12-09 05:04:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:08,828 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-12-09 05:04:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:08,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 05:04:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:08,830 INFO L225 Difference]: With dead ends: 63 [2020-12-09 05:04:08,830 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 05:04:08,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:08,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 05:04:08,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 35. [2020-12-09 05:04:08,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 61 transitions. [2020-12-09 05:04:08,835 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 61 transitions. Word has length 8 [2020-12-09 05:04:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:08,835 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 61 transitions. [2020-12-09 05:04:08,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:08,835 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 61 transitions. [2020-12-09 05:04:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 05:04:08,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:08,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:08,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:04:08,836 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:08,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:08,837 INFO L82 PathProgramCache]: Analyzing trace with hash 924365245, now seen corresponding path program 1 times [2020-12-09 05:04:08,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:08,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127035638] [2020-12-09 05:04:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:08,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127035638] [2020-12-09 05:04:08,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:08,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:08,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212251794] [2020-12-09 05:04:08,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:08,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:08,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:08,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:08,875 INFO L87 Difference]: Start difference. First operand 35 states and 61 transitions. Second operand 4 states. [2020-12-09 05:04:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:08,895 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-12-09 05:04:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:08,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 05:04:08,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:08,897 INFO L225 Difference]: With dead ends: 61 [2020-12-09 05:04:08,897 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 05:04:08,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 05:04:08,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 35. [2020-12-09 05:04:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 60 transitions. [2020-12-09 05:04:08,901 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 60 transitions. Word has length 9 [2020-12-09 05:04:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:08,902 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 60 transitions. [2020-12-09 05:04:08,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 60 transitions. [2020-12-09 05:04:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:04:08,902 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:08,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:08,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:04:08,903 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:08,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:08,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1409235726, now seen corresponding path program 1 times [2020-12-09 05:04:08,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:08,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120946515] [2020-12-09 05:04:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:08,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120946515] [2020-12-09 05:04:08,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:08,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:08,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559142234] [2020-12-09 05:04:08,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:08,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:08,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:08,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:08,939 INFO L87 Difference]: Start difference. First operand 35 states and 60 transitions. Second operand 4 states. [2020-12-09 05:04:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:08,955 INFO L93 Difference]: Finished difference Result 59 states and 102 transitions. [2020-12-09 05:04:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:08,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 05:04:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:08,957 INFO L225 Difference]: With dead ends: 59 [2020-12-09 05:04:08,957 INFO L226 Difference]: Without dead ends: 59 [2020-12-09 05:04:08,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:08,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-09 05:04:08,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-09 05:04:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 59 transitions. [2020-12-09 05:04:08,961 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 59 transitions. Word has length 10 [2020-12-09 05:04:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:08,962 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 59 transitions. [2020-12-09 05:04:08,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 59 transitions. [2020-12-09 05:04:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 05:04:08,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:08,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:08,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 05:04:08,963 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:08,963 INFO L82 PathProgramCache]: Analyzing trace with hash -736421454, now seen corresponding path program 1 times [2020-12-09 05:04:08,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:08,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393376354] [2020-12-09 05:04:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:08,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393376354] [2020-12-09 05:04:08,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:08,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:08,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237560441] [2020-12-09 05:04:08,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:08,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:08,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:08,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:08,998 INFO L87 Difference]: Start difference. First operand 35 states and 59 transitions. Second operand 4 states. [2020-12-09 05:04:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:09,013 INFO L93 Difference]: Finished difference Result 57 states and 97 transitions. [2020-12-09 05:04:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:09,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 05:04:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:09,015 INFO L225 Difference]: With dead ends: 57 [2020-12-09 05:04:09,015 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 05:04:09,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 05:04:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 35. [2020-12-09 05:04:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 58 transitions. [2020-12-09 05:04:09,018 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 58 transitions. Word has length 11 [2020-12-09 05:04:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:09,019 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 58 transitions. [2020-12-09 05:04:09,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 58 transitions. [2020-12-09 05:04:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:04:09,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:09,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:09,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:04:09,020 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:09,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:09,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1354015161, now seen corresponding path program 1 times [2020-12-09 05:04:09,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:09,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468304162] [2020-12-09 05:04:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:09,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468304162] [2020-12-09 05:04:09,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:09,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:09,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217621078] [2020-12-09 05:04:09,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:09,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:09,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:09,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,053 INFO L87 Difference]: Start difference. First operand 35 states and 58 transitions. Second operand 4 states. [2020-12-09 05:04:09,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:09,068 INFO L93 Difference]: Finished difference Result 55 states and 92 transitions. [2020-12-09 05:04:09,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:09,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 05:04:09,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:09,070 INFO L225 Difference]: With dead ends: 55 [2020-12-09 05:04:09,070 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 05:04:09,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 05:04:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 35. [2020-12-09 05:04:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 57 transitions. [2020-12-09 05:04:09,073 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 57 transitions. Word has length 12 [2020-12-09 05:04:09,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:09,074 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 57 transitions. [2020-12-09 05:04:09,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:09,074 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 57 transitions. [2020-12-09 05:04:09,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 05:04:09,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:09,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:09,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 05:04:09,075 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:09,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:09,076 INFO L82 PathProgramCache]: Analyzing trace with hash 975416743, now seen corresponding path program 1 times [2020-12-09 05:04:09,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:09,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249023267] [2020-12-09 05:04:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:09,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249023267] [2020-12-09 05:04:09,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:09,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:09,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451801479] [2020-12-09 05:04:09,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:09,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:09,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:09,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,105 INFO L87 Difference]: Start difference. First operand 35 states and 57 transitions. Second operand 4 states. [2020-12-09 05:04:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:09,118 INFO L93 Difference]: Finished difference Result 53 states and 87 transitions. [2020-12-09 05:04:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:09,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 05:04:09,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:09,119 INFO L225 Difference]: With dead ends: 53 [2020-12-09 05:04:09,119 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 05:04:09,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 05:04:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 35. [2020-12-09 05:04:09,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-12-09 05:04:09,122 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 13 [2020-12-09 05:04:09,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:09,122 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-12-09 05:04:09,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:09,122 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-12-09 05:04:09,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 05:04:09,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:09,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:09,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 05:04:09,123 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:09,123 INFO L82 PathProgramCache]: Analyzing trace with hash 173362076, now seen corresponding path program 1 times [2020-12-09 05:04:09,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:09,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674148451] [2020-12-09 05:04:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:09,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674148451] [2020-12-09 05:04:09,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:09,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:09,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200555881] [2020-12-09 05:04:09,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:09,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:09,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:09,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,146 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-12-09 05:04:09,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:09,161 INFO L93 Difference]: Finished difference Result 51 states and 82 transitions. [2020-12-09 05:04:09,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:09,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 05:04:09,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:09,162 INFO L225 Difference]: With dead ends: 51 [2020-12-09 05:04:09,163 INFO L226 Difference]: Without dead ends: 51 [2020-12-09 05:04:09,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-09 05:04:09,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2020-12-09 05:04:09,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 55 transitions. [2020-12-09 05:04:09,166 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 55 transitions. Word has length 14 [2020-12-09 05:04:09,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:09,166 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 55 transitions. [2020-12-09 05:04:09,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:09,166 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 55 transitions. [2020-12-09 05:04:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 05:04:09,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:09,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:09,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 05:04:09,167 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:09,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:09,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1079471516, now seen corresponding path program 1 times [2020-12-09 05:04:09,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:09,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47993506] [2020-12-09 05:04:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:09,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47993506] [2020-12-09 05:04:09,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:09,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:09,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186392538] [2020-12-09 05:04:09,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:09,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:09,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:09,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,199 INFO L87 Difference]: Start difference. First operand 35 states and 55 transitions. Second operand 4 states. [2020-12-09 05:04:09,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:09,216 INFO L93 Difference]: Finished difference Result 49 states and 77 transitions. [2020-12-09 05:04:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:09,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 05:04:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:09,217 INFO L225 Difference]: With dead ends: 49 [2020-12-09 05:04:09,217 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 05:04:09,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 05:04:09,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2020-12-09 05:04:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 54 transitions. [2020-12-09 05:04:09,220 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 54 transitions. Word has length 15 [2020-12-09 05:04:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:09,221 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 54 transitions. [2020-12-09 05:04:09,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 54 transitions. [2020-12-09 05:04:09,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 05:04:09,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:09,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:09,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 05:04:09,222 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:09,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:09,223 INFO L82 PathProgramCache]: Analyzing trace with hash -895906575, now seen corresponding path program 1 times [2020-12-09 05:04:09,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:09,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582603249] [2020-12-09 05:04:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:09,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582603249] [2020-12-09 05:04:09,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:09,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:09,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121345579] [2020-12-09 05:04:09,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:09,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:09,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:09,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,252 INFO L87 Difference]: Start difference. First operand 35 states and 54 transitions. Second operand 4 states. [2020-12-09 05:04:09,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:09,264 INFO L93 Difference]: Finished difference Result 47 states and 72 transitions. [2020-12-09 05:04:09,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:09,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 05:04:09,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:09,265 INFO L225 Difference]: With dead ends: 47 [2020-12-09 05:04:09,266 INFO L226 Difference]: Without dead ends: 47 [2020-12-09 05:04:09,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-09 05:04:09,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-12-09 05:04:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2020-12-09 05:04:09,268 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 16 [2020-12-09 05:04:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:09,268 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2020-12-09 05:04:09,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2020-12-09 05:04:09,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 05:04:09,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:09,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:09,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 05:04:09,269 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:09,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2003084911, now seen corresponding path program 1 times [2020-12-09 05:04:09,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:09,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397336196] [2020-12-09 05:04:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:09,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397336196] [2020-12-09 05:04:09,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:09,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:09,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947615053] [2020-12-09 05:04:09,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:09,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:09,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:09,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,299 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand 4 states. [2020-12-09 05:04:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:09,313 INFO L93 Difference]: Finished difference Result 45 states and 67 transitions. [2020-12-09 05:04:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:09,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 05:04:09,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:09,314 INFO L225 Difference]: With dead ends: 45 [2020-12-09 05:04:09,314 INFO L226 Difference]: Without dead ends: 45 [2020-12-09 05:04:09,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-09 05:04:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2020-12-09 05:04:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2020-12-09 05:04:09,317 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 52 transitions. Word has length 17 [2020-12-09 05:04:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:09,317 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 52 transitions. [2020-12-09 05:04:09,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2020-12-09 05:04:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 05:04:09,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:09,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:09,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 05:04:09,319 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1965874618, now seen corresponding path program 1 times [2020-12-09 05:04:09,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:09,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871677763] [2020-12-09 05:04:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:09,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871677763] [2020-12-09 05:04:09,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:09,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:09,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365274042] [2020-12-09 05:04:09,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:09,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:09,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:09,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,344 INFO L87 Difference]: Start difference. First operand 35 states and 52 transitions. Second operand 4 states. [2020-12-09 05:04:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:09,357 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2020-12-09 05:04:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:09,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-09 05:04:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:09,357 INFO L225 Difference]: With dead ends: 43 [2020-12-09 05:04:09,358 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 05:04:09,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 05:04:09,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-12-09 05:04:09,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:09,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 51 transitions. [2020-12-09 05:04:09,360 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 51 transitions. Word has length 18 [2020-12-09 05:04:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:09,360 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 51 transitions. [2020-12-09 05:04:09,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:09,360 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2020-12-09 05:04:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 05:04:09,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:09,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:09,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 05:04:09,361 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:09,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:09,361 INFO L82 PathProgramCache]: Analyzing trace with hash -812355194, now seen corresponding path program 1 times [2020-12-09 05:04:09,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:09,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123311405] [2020-12-09 05:04:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:09,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123311405] [2020-12-09 05:04:09,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:09,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:09,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839806482] [2020-12-09 05:04:09,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:09,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:09,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:09,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,384 INFO L87 Difference]: Start difference. First operand 35 states and 51 transitions. Second operand 4 states. [2020-12-09 05:04:09,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:09,397 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-12-09 05:04:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:09,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-09 05:04:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:09,398 INFO L225 Difference]: With dead ends: 41 [2020-12-09 05:04:09,398 INFO L226 Difference]: Without dead ends: 41 [2020-12-09 05:04:09,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-09 05:04:09,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2020-12-09 05:04:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:04:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-12-09 05:04:09,401 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 19 [2020-12-09 05:04:09,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:09,401 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-12-09 05:04:09,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-12-09 05:04:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 05:04:09,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:04:09,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:09,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 05:04:09,402 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:04:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:09,402 INFO L82 PathProgramCache]: Analyzing trace with hash 587008923, now seen corresponding path program 1 times [2020-12-09 05:04:09,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:04:09,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028214943] [2020-12-09 05:04:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:04:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:09,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028214943] [2020-12-09 05:04:09,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:04:09,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:04:09,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901800808] [2020-12-09 05:04:09,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:04:09,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:04:09,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:04:09,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,432 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 4 states. [2020-12-09 05:04:09,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:04:09,448 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-12-09 05:04:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:04:09,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-09 05:04:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:04:09,449 INFO L225 Difference]: With dead ends: 35 [2020-12-09 05:04:09,449 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:04:09,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:04:09,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:04:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:04:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:04:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:04:09,450 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-09 05:04:09,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:04:09,450 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:04:09,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:04:09,450 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:04:09,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:04:09,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-09 05:04:09,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:04:09 BoogieIcfgContainer [2020-12-09 05:04:09,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:04:09,455 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:04:09,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:04:09,455 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:04:09,456 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:04:08" (3/4) ... [2020-12-09 05:04:09,459 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:04:09,471 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 05:04:09,472 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 05:04:09,472 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 05:04:09,473 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:04:09,530 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bbbe0654-5fb2-40eb-9bd8-dccf16fbfbb2/bin/utaipan/witness.graphml [2020-12-09 05:04:09,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:04:09,532 INFO L168 Benchmark]: Toolchain (without parser) took 2039.52 ms. Allocated memory was 98.6 MB in the beginning and 138.4 MB in the end (delta: 39.8 MB). Free memory was 57.9 MB in the beginning and 75.5 MB in the end (delta: -17.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2020-12-09 05:04:09,532 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 74.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:04:09,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.38 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 72.8 MB in the end (delta: -15.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:04:09,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.46 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 71.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:04:09,533 INFO L168 Benchmark]: Boogie Preprocessor took 26.78 ms. Allocated memory is still 98.6 MB. Free memory was 71.1 MB in the beginning and 69.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:04:09,534 INFO L168 Benchmark]: RCFGBuilder took 558.23 ms. Allocated memory was 98.6 MB in the beginning and 138.4 MB in the end (delta: 39.8 MB). Free memory was 69.4 MB in the beginning and 107.4 MB in the end (delta: -38.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2020-12-09 05:04:09,534 INFO L168 Benchmark]: TraceAbstraction took 1125.48 ms. Allocated memory is still 138.4 MB. Free memory was 107.4 MB in the beginning and 80.7 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:04:09,534 INFO L168 Benchmark]: Witness Printer took 75.79 ms. Allocated memory is still 138.4 MB. Free memory was 79.7 MB in the beginning and 75.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:04:09,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 74.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 213.38 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 72.8 MB in the end (delta: -15.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.46 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 71.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.78 ms. Allocated memory is still 98.6 MB. Free memory was 71.1 MB in the beginning and 69.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 558.23 ms. Allocated memory was 98.6 MB in the beginning and 138.4 MB in the end (delta: 39.8 MB). Free memory was 69.4 MB in the beginning and 107.4 MB in the end (delta: -38.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1125.48 ms. Allocated memory is still 138.4 MB. Free memory was 107.4 MB in the beginning and 80.7 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * Witness Printer took 75.79 ms. Allocated memory is still 138.4 MB. Free memory was 79.7 MB in the beginning and 75.5 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: 233]: 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, 39 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 943 SDtfs, 751 SDslu, 1213 SDs, 0 SdLazy, 135 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 17 MinimizatonAttempts, 266 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 187 ConstructedInterpolants, 0 QuantifiedInterpolants, 13177 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 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...