./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.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_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/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 fb0d163b15d3c265ca05b2b9dcc84c96a983bffe .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:59:17,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:59:17,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:59:17,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:59:17,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:59:17,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:59:17,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:59:17,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:59:17,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:59:17,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:59:17,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:59:17,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:59:17,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:59:17,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:59:17,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:59:17,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:59:17,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:59:17,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:59:17,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:59:17,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:59:17,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:59:17,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:59:17,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:59:17,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:59:17,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:59:17,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:59:17,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:59:17,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:59:17,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:59:17,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:59:17,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:59:17,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:59:17,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:59:17,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:59:17,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:59:17,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:59:17,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:59:17,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:59:17,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:59:17,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:59:17,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:59:17,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 06:59:17,717 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:59:17,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:59:17,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:59:17,717 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:59:17,718 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:59:17,718 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:59:17,718 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:59:17,718 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:59:17,718 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:59:17,718 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:59:17,718 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:59:17,718 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:59:17,718 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:59:17,719 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:59:17,719 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:59:17,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 06:59:17,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 06:59:17,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:59:17,720 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:59:17,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 06:59:17,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:59:17,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:59:17,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:59:17,720 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 06:59:17,721 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 06:59:17,721 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 06:59:17,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:59:17,721 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:59:17,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:59:17,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:59:17,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:59:17,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:59:17,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:59:17,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:59:17,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:59:17,722 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:59:17,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:59:17,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:59:17,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:59:17,722 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_5846a009-60b6-4234-ac02-d7914d5ef556/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb0d163b15d3c265ca05b2b9dcc84c96a983bffe [2020-12-09 06:59:17,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:59:17,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:59:17,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:59:17,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:59:17,919 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:59:17,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan/../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-12-09 06:59:17,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan/data/66a9d9380/829dd4888ecf47a8993d1aded8506c1e/FLAG84091b440 [2020-12-09 06:59:18,343 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:59:18,343 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-12-09 06:59:18,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan/data/66a9d9380/829dd4888ecf47a8993d1aded8506c1e/FLAG84091b440 [2020-12-09 06:59:18,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan/data/66a9d9380/829dd4888ecf47a8993d1aded8506c1e [2020-12-09 06:59:18,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:59:18,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:59:18,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:59:18,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:59:18,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:59:18,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:59:18" (1/1) ... [2020-12-09 06:59:18,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73653d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18, skipping insertion in model container [2020-12-09 06:59:18,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:59:18" (1/1) ... [2020-12-09 06:59:18,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:59:18,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:59:18,534 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_5846a009-60b6-4234-ac02-d7914d5ef556/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c[17080,17093] [2020-12-09 06:59:18,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:59:18,543 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:59:18,577 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_5846a009-60b6-4234-ac02-d7914d5ef556/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c[17080,17093] [2020-12-09 06:59:18,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:59:18,590 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:59:18,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18 WrapperNode [2020-12-09 06:59:18,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:59:18,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:59:18,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:59:18,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:59:18,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18" (1/1) ... [2020-12-09 06:59:18,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18" (1/1) ... [2020-12-09 06:59:18,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:59:18,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:59:18,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:59:18,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:59:18,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18" (1/1) ... [2020-12-09 06:59:18,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18" (1/1) ... [2020-12-09 06:59:18,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18" (1/1) ... [2020-12-09 06:59:18,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18" (1/1) ... [2020-12-09 06:59:18,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18" (1/1) ... [2020-12-09 06:59:18,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18" (1/1) ... [2020-12-09 06:59:18,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18" (1/1) ... [2020-12-09 06:59:18,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:59:18,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:59:18,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:59:18,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:59:18,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/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 06:59:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:59:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:59:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:59:18,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:59:18,811 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 06:59:18,816 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 06:59:18,821 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 06:59:18,825 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 06:59:18,830 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 06:59:18,835 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 06:59:18,841 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 06:59:19,206 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume !false; [2020-12-09 06:59:19,206 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume false; [2020-12-09 06:59:19,207 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##184: assume false; [2020-12-09 06:59:19,207 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##185: assume !false; [2020-12-09 06:59:19,207 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !false; [2020-12-09 06:59:19,207 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume false; [2020-12-09 06:59:19,207 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !false; [2020-12-09 06:59:19,207 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume false; [2020-12-09 06:59:19,207 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2020-12-09 06:59:19,208 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2020-12-09 06:59:19,208 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##158: assume !false; [2020-12-09 06:59:19,208 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##157: assume false; [2020-12-09 06:59:19,208 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume !false; [2020-12-09 06:59:19,208 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##105: assume false; [2020-12-09 06:59:19,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:59:19,601 INFO L299 CfgBuilder]: Removed 78 assume(true) statements. [2020-12-09 06:59:19,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:59:19 BoogieIcfgContainer [2020-12-09 06:59:19,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:59:19,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:59:19,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:59:19,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:59:19,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:59:18" (1/3) ... [2020-12-09 06:59:19,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752baa4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:59:19, skipping insertion in model container [2020-12-09 06:59:19,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:18" (2/3) ... [2020-12-09 06:59:19,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752baa4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:59:19, skipping insertion in model container [2020-12-09 06:59:19,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:59:19" (3/3) ... [2020-12-09 06:59:19,612 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.c [2020-12-09 06:59:19,625 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:59:19,628 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-12-09 06:59:19,638 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-12-09 06:59:19,657 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:59:19,658 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 06:59:19,658 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:59:19,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:59:19,658 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:59:19,658 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:59:19,658 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:59:19,658 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:59:19,674 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-12-09 06:59:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 06:59:19,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:19,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 06:59:19,681 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:19,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:19,685 INFO L82 PathProgramCache]: Analyzing trace with hash 21291364, now seen corresponding path program 1 times [2020-12-09 06:59:19,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:19,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597988961] [2020-12-09 06:59:19,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:19,825 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 06:59:19,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597988961] [2020-12-09 06:59:19,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:19,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:59:19,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413748009] [2020-12-09 06:59:19,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:59:19,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:19,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:59:19,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:59:19,847 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 4 states. [2020-12-09 06:59:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:19,889 INFO L93 Difference]: Finished difference Result 103 states and 131 transitions. [2020-12-09 06:59:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:59:19,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 06:59:19,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:19,898 INFO L225 Difference]: With dead ends: 103 [2020-12-09 06:59:19,898 INFO L226 Difference]: Without dead ends: 101 [2020-12-09 06:59:19,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:59:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-09 06:59:19,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-12-09 06:59:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-09 06:59:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2020-12-09 06:59:19,928 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 4 [2020-12-09 06:59:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:19,928 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 128 transitions. [2020-12-09 06:59:19,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:59:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2020-12-09 06:59:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 06:59:19,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:19,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 06:59:19,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:59:19,929 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:19,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:19,930 INFO L82 PathProgramCache]: Analyzing trace with hash 660035328, now seen corresponding path program 1 times [2020-12-09 06:59:19,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:19,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581798538] [2020-12-09 06:59:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:19,959 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 06:59:19,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581798538] [2020-12-09 06:59:19,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:19,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 06:59:19,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807933255] [2020-12-09 06:59:19,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:59:19,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:19,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:59:19,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:59:19,962 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand 3 states. [2020-12-09 06:59:19,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:19,967 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2020-12-09 06:59:19,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:59:19,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 06:59:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:19,968 INFO L225 Difference]: With dead ends: 98 [2020-12-09 06:59:19,968 INFO L226 Difference]: Without dead ends: 96 [2020-12-09 06:59:19,969 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 06:59:19,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-09 06:59:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-12-09 06:59:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-09 06:59:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2020-12-09 06:59:19,976 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 5 [2020-12-09 06:59:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:19,976 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2020-12-09 06:59:19,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:59:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2020-12-09 06:59:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 06:59:19,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:19,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:59:19,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:59:19,977 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:19,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:19,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1361099280, now seen corresponding path program 1 times [2020-12-09 06:59:19,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:19,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261910580] [2020-12-09 06:59:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:20,016 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 06:59:20,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261910580] [2020-12-09 06:59:20,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:20,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:59:20,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491697727] [2020-12-09 06:59:20,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:59:20,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:20,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:59:20,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:59:20,018 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand 3 states. [2020-12-09 06:59:20,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:20,081 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2020-12-09 06:59:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:59:20,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 06:59:20,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:20,083 INFO L225 Difference]: With dead ends: 91 [2020-12-09 06:59:20,083 INFO L226 Difference]: Without dead ends: 91 [2020-12-09 06:59:20,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:59:20,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-09 06:59:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-12-09 06:59:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-09 06:59:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2020-12-09 06:59:20,093 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 7 [2020-12-09 06:59:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:20,093 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2020-12-09 06:59:20,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:59:20,093 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2020-12-09 06:59:20,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:59:20,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:20,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:59:20,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:59:20,094 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:20,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:20,095 INFO L82 PathProgramCache]: Analyzing trace with hash 755601418, now seen corresponding path program 1 times [2020-12-09 06:59:20,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:20,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116712415] [2020-12-09 06:59:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:20,130 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 06:59:20,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116712415] [2020-12-09 06:59:20,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:20,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:59:20,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517120109] [2020-12-09 06:59:20,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:59:20,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:20,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:59:20,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:59:20,131 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand 3 states. [2020-12-09 06:59:20,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:20,146 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2020-12-09 06:59:20,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:59:20,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 06:59:20,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:20,147 INFO L225 Difference]: With dead ends: 110 [2020-12-09 06:59:20,147 INFO L226 Difference]: Without dead ends: 110 [2020-12-09 06:59:20,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:59:20,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-09 06:59:20,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2020-12-09 06:59:20,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-09 06:59:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2020-12-09 06:59:20,152 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 8 [2020-12-09 06:59:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:20,152 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2020-12-09 06:59:20,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:59:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2020-12-09 06:59:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 06:59:20,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:20,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:59:20,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 06:59:20,153 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:20,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:20,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1108104949, now seen corresponding path program 1 times [2020-12-09 06:59:20,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:20,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402751408] [2020-12-09 06:59:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:20,187 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 06:59:20,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402751408] [2020-12-09 06:59:20,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:20,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:59:20,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830726975] [2020-12-09 06:59:20,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:59:20,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:20,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:59:20,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:59:20,188 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand 3 states. [2020-12-09 06:59:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:20,228 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2020-12-09 06:59:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:59:20,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-09 06:59:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:20,229 INFO L225 Difference]: With dead ends: 74 [2020-12-09 06:59:20,229 INFO L226 Difference]: Without dead ends: 74 [2020-12-09 06:59:20,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:59:20,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-09 06:59:20,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-09 06:59:20,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 06:59:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-12-09 06:59:20,233 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 14 [2020-12-09 06:59:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:20,234 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-12-09 06:59:20,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:59:20,234 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-12-09 06:59:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 06:59:20,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:20,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:59:20,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 06:59:20,235 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:20,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1598815890, now seen corresponding path program 1 times [2020-12-09 06:59:20,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:20,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784171786] [2020-12-09 06:59:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:20,265 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 06:59:20,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784171786] [2020-12-09 06:59:20,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:20,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:59:20,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245599981] [2020-12-09 06:59:20,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:59:20,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:20,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:59:20,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:59:20,266 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 3 states. [2020-12-09 06:59:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:20,303 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2020-12-09 06:59:20,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:59:20,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-09 06:59:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:20,304 INFO L225 Difference]: With dead ends: 71 [2020-12-09 06:59:20,304 INFO L226 Difference]: Without dead ends: 71 [2020-12-09 06:59:20,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:59:20,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-09 06:59:20,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-09 06:59:20,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-09 06:59:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2020-12-09 06:59:20,308 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 15 [2020-12-09 06:59:20,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:20,308 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2020-12-09 06:59:20,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:59:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2020-12-09 06:59:20,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 06:59:20,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:20,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:59:20,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 06:59:20,310 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:20,310 INFO L82 PathProgramCache]: Analyzing trace with hash 2084831599, now seen corresponding path program 1 times [2020-12-09 06:59:20,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:20,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624459110] [2020-12-09 06:59:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:20,343 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 06:59:20,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624459110] [2020-12-09 06:59:20,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:20,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 06:59:20,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532713806] [2020-12-09 06:59:20,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:59:20,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:20,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:59:20,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:59:20,345 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand 5 states. [2020-12-09 06:59:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:20,375 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions. [2020-12-09 06:59:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 06:59:20,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-09 06:59:20,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:20,376 INFO L225 Difference]: With dead ends: 83 [2020-12-09 06:59:20,376 INFO L226 Difference]: Without dead ends: 83 [2020-12-09 06:59:20,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:59:20,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-09 06:59:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 69. [2020-12-09 06:59:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 06:59:20,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2020-12-09 06:59:20,380 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 16 [2020-12-09 06:59:20,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:20,380 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2020-12-09 06:59:20,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:59:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2020-12-09 06:59:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 06:59:20,381 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:20,381 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 06:59:20,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 06:59:20,381 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:20,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:20,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1509590287, now seen corresponding path program 1 times [2020-12-09 06:59:20,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:20,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754995357] [2020-12-09 06:59:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:20,424 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 06:59:20,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754995357] [2020-12-09 06:59:20,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:20,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:59:20,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549789945] [2020-12-09 06:59:20,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:59:20,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:20,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:59:20,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:59:20,426 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand 4 states. [2020-12-09 06:59:20,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:20,473 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2020-12-09 06:59:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:59:20,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 06:59:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:20,474 INFO L225 Difference]: With dead ends: 80 [2020-12-09 06:59:20,474 INFO L226 Difference]: Without dead ends: 80 [2020-12-09 06:59:20,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:59:20,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-09 06:59:20,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2020-12-09 06:59:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 06:59:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2020-12-09 06:59:20,477 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 17 [2020-12-09 06:59:20,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:20,477 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2020-12-09 06:59:20,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:59:20,480 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2020-12-09 06:59:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 06:59:20,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:20,481 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 06:59:20,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 06:59:20,482 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:20,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:20,482 INFO L82 PathProgramCache]: Analyzing trace with hash -2005430389, now seen corresponding path program 1 times [2020-12-09 06:59:20,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:20,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329366048] [2020-12-09 06:59:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:20,519 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 06:59:20,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329366048] [2020-12-09 06:59:20,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:20,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 06:59:20,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808653530] [2020-12-09 06:59:20,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:59:20,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:20,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:59:20,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:59:20,521 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand 5 states. [2020-12-09 06:59:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:20,623 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2020-12-09 06:59:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:59:20,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 06:59:20,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:20,624 INFO L225 Difference]: With dead ends: 88 [2020-12-09 06:59:20,624 INFO L226 Difference]: Without dead ends: 88 [2020-12-09 06:59:20,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:59:20,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-09 06:59:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69. [2020-12-09 06:59:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 06:59:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2020-12-09 06:59:20,628 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 18 [2020-12-09 06:59:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:20,628 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2020-12-09 06:59:20,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:59:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2020-12-09 06:59:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 06:59:20,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:20,630 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 06:59:20,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 06:59:20,630 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:20,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:20,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2093303207, now seen corresponding path program 1 times [2020-12-09 06:59:20,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:20,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306684397] [2020-12-09 06:59:20,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:20,662 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 06:59:20,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306684397] [2020-12-09 06:59:20,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:20,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:59:20,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036454359] [2020-12-09 06:59:20,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:59:20,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:20,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:59:20,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:59:20,664 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand 3 states. [2020-12-09 06:59:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:20,708 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2020-12-09 06:59:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:59:20,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 06:59:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:20,709 INFO L225 Difference]: With dead ends: 80 [2020-12-09 06:59:20,709 INFO L226 Difference]: Without dead ends: 80 [2020-12-09 06:59:20,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:59:20,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-09 06:59:20,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2020-12-09 06:59:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-09 06:59:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2020-12-09 06:59:20,713 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 19 [2020-12-09 06:59:20,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:20,713 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2020-12-09 06:59:20,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:59:20,713 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2020-12-09 06:59:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 06:59:20,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:20,714 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 06:59:20,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 06:59:20,715 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:20,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:20,715 INFO L82 PathProgramCache]: Analyzing trace with hash -475548952, now seen corresponding path program 1 times [2020-12-09 06:59:20,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:20,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103706418] [2020-12-09 06:59:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:20,745 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 06:59:20,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103706418] [2020-12-09 06:59:20,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:20,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:59:20,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242171092] [2020-12-09 06:59:20,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:59:20,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:20,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:59:20,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:59:20,746 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand 3 states. [2020-12-09 06:59:20,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:20,752 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2020-12-09 06:59:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:59:20,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-09 06:59:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:20,753 INFO L225 Difference]: With dead ends: 84 [2020-12-09 06:59:20,753 INFO L226 Difference]: Without dead ends: 84 [2020-12-09 06:59:20,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:59:20,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-09 06:59:20,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2020-12-09 06:59:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-09 06:59:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2020-12-09 06:59:20,755 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 20 [2020-12-09 06:59:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:20,755 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2020-12-09 06:59:20,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:59:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2020-12-09 06:59:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 06:59:20,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:20,756 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, 1] [2020-12-09 06:59:20,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 06:59:20,756 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:20,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:20,756 INFO L82 PathProgramCache]: Analyzing trace with hash -633404570, now seen corresponding path program 1 times [2020-12-09 06:59:20,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:20,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184959178] [2020-12-09 06:59:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:20,786 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 06:59:20,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184959178] [2020-12-09 06:59:20,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:20,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:59:20,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711702452] [2020-12-09 06:59:20,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:59:20,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:20,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:59:20,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:59:20,787 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand 4 states. [2020-12-09 06:59:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:20,855 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-12-09 06:59:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:59:20,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-12-09 06:59:20,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:20,856 INFO L225 Difference]: With dead ends: 78 [2020-12-09 06:59:20,856 INFO L226 Difference]: Without dead ends: 78 [2020-12-09 06:59:20,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:59:20,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-09 06:59:20,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2020-12-09 06:59:20,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-09 06:59:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2020-12-09 06:59:20,859 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 21 [2020-12-09 06:59:20,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:20,859 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2020-12-09 06:59:20,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:59:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2020-12-09 06:59:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 06:59:20,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:20,860 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, 1, 1] [2020-12-09 06:59:20,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 06:59:20,860 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:20,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:20,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1349652091, now seen corresponding path program 1 times [2020-12-09 06:59:20,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:20,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158781372] [2020-12-09 06:59:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:20,904 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 06:59:20,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158781372] [2020-12-09 06:59:20,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:20,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 06:59:20,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229941779] [2020-12-09 06:59:20,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:59:20,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:20,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:59:20,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:59:20,906 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand 5 states. [2020-12-09 06:59:21,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:21,003 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2020-12-09 06:59:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:59:21,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-09 06:59:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:21,004 INFO L225 Difference]: With dead ends: 79 [2020-12-09 06:59:21,004 INFO L226 Difference]: Without dead ends: 79 [2020-12-09 06:59:21,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:59:21,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-09 06:59:21,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2020-12-09 06:59:21,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-09 06:59:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-12-09 06:59:21,006 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 22 [2020-12-09 06:59:21,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:21,006 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-12-09 06:59:21,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:59:21,006 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-12-09 06:59:21,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 06:59:21,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:59:21,006 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, 1, 1] [2020-12-09 06:59:21,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 06:59:21,007 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:59:21,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:59:21,007 INFO L82 PathProgramCache]: Analyzing trace with hash -441510886, now seen corresponding path program 1 times [2020-12-09 06:59:21,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:59:21,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020637282] [2020-12-09 06:59:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:59:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:59:21,034 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 06:59:21,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020637282] [2020-12-09 06:59:21,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:59:21,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:59:21,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185420284] [2020-12-09 06:59:21,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:59:21,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:59:21,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:59:21,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:59:21,035 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 5 states. [2020-12-09 06:59:21,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:59:21,057 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-12-09 06:59:21,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:59:21,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-09 06:59:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:59:21,057 INFO L225 Difference]: With dead ends: 55 [2020-12-09 06:59:21,058 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:59:21,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:59:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:59:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:59:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:59:21,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:59:21,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-12-09 06:59:21,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:59:21,058 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:59:21,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:59:21,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:59:21,059 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:59:21,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 06:59:21,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:59:21 BoogieIcfgContainer [2020-12-09 06:59:21,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:59:21,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:59:21,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:59:21,063 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:59:21,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:59:19" (3/4) ... [2020-12-09 06:59:21,065 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 06:59:21,083 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 97 nodes and edges [2020-12-09 06:59:21,084 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 06:59:21,086 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 06:59:21,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 06:59:21,165 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5846a009-60b6-4234-ac02-d7914d5ef556/bin/utaipan/witness.graphml [2020-12-09 06:59:21,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:59:21,167 INFO L168 Benchmark]: Toolchain (without parser) took 2803.56 ms. Allocated memory was 115.3 MB in the beginning and 144.7 MB in the end (delta: 29.4 MB). Free memory was 93.5 MB in the beginning and 61.6 MB in the end (delta: 31.9 MB). Peak memory consumption was 62.0 MB. Max. memory is 16.1 GB. [2020-12-09 06:59:21,167 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 67.1 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:59:21,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.55 ms. Allocated memory is still 115.3 MB. Free memory was 93.2 MB in the beginning and 78.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:59:21,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.78 ms. Allocated memory is still 115.3 MB. Free memory was 78.7 MB in the beginning and 75.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:59:21,168 INFO L168 Benchmark]: Boogie Preprocessor took 30.93 ms. Allocated memory is still 115.3 MB. Free memory was 75.3 MB in the beginning and 72.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:59:21,168 INFO L168 Benchmark]: RCFGBuilder took 936.13 ms. Allocated memory was 115.3 MB in the beginning and 144.7 MB in the end (delta: 29.4 MB). Free memory was 72.8 MB in the beginning and 112.3 MB in the end (delta: -39.5 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2020-12-09 06:59:21,168 INFO L168 Benchmark]: TraceAbstraction took 1456.74 ms. Allocated memory is still 144.7 MB. Free memory was 112.3 MB in the beginning and 74.2 MB in the end (delta: 38.1 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2020-12-09 06:59:21,169 INFO L168 Benchmark]: Witness Printer took 103.30 ms. Allocated memory is still 144.7 MB. Free memory was 74.2 MB in the beginning and 61.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:59:21,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 67.1 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 227.55 ms. Allocated memory is still 115.3 MB. Free memory was 93.2 MB in the beginning and 78.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.78 ms. Allocated memory is still 115.3 MB. Free memory was 78.7 MB in the beginning and 75.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.93 ms. Allocated memory is still 115.3 MB. Free memory was 75.3 MB in the beginning and 72.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 936.13 ms. Allocated memory was 115.3 MB in the beginning and 144.7 MB in the end (delta: 29.4 MB). Free memory was 72.8 MB in the beginning and 112.3 MB in the end (delta: -39.5 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1456.74 ms. Allocated memory is still 144.7 MB. Free memory was 112.3 MB in the beginning and 74.2 MB in the end (delta: 38.1 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. * Witness Printer took 103.30 ms. Allocated memory is still 144.7 MB. Free memory was 74.2 MB in the beginning and 61.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 288]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 100 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1186 SDtfs, 1073 SDslu, 578 SDs, 0 SdLazy, 596 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred 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, 14 MinimizatonAttempts, 132 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 8391 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...