./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ca87716ddde5218a0bb0d9c4d67f4e1c636cb2c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:58,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:58,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:58,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:58,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:58,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:58,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:58,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:58,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:58,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:58,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:58,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:58,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:58,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:58,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:58,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:58,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:58,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:58,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:58,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:58,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:58,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:58,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:58,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:58,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:58,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:58,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:58,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:58,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:58,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:58,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:58,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:58,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:58,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:58,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:58,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:58,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:58,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:58,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:58,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:58,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:58,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-10-11 02:29:58,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:58,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:58,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:58,623 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:58,623 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:58,624 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:58,624 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:58,624 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:58,624 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:58,625 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:58,626 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:58,626 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:58,626 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:58,627 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:58,627 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:58,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:29:58,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:29:58,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:58,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:58,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:29:58,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:58,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:58,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:58,630 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:29:58,630 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:29:58,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:58,632 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:58,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:58,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:58,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:58,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:58,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:58,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:58,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:58,634 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:58,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:58,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:58,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:58,635 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ca87716ddde5218a0bb0d9c4d67f4e1c636cb2c [2021-10-11 02:29:58,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:58,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:58,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:59,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:59,006 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:59,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/forester-heap/sll-circular-2.i [2021-10-11 02:29:59,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/data/224cdd1a5/3f506fc907714400bff320e4a64c32df/FLAG7701133f2 [2021-10-11 02:29:59,715 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:59,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/sv-benchmarks/c/forester-heap/sll-circular-2.i [2021-10-11 02:29:59,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/data/224cdd1a5/3f506fc907714400bff320e4a64c32df/FLAG7701133f2 [2021-10-11 02:30:00,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/data/224cdd1a5/3f506fc907714400bff320e4a64c32df [2021-10-11 02:30:00,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:00,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:00,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:00,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:00,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:00,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:00" (1/1) ... [2021-10-11 02:30:00,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73bd0abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00, skipping insertion in model container [2021-10-11 02:30:00,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:00" (1/1) ... [2021-10-11 02:30:00,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:00,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:00,518 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/sv-benchmarks/c/forester-heap/sll-circular-2.i[22324,22337] [2021-10-11 02:30:00,526 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/sv-benchmarks/c/forester-heap/sll-circular-2.i[22430,22443] [2021-10-11 02:30:00,530 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/sv-benchmarks/c/forester-heap/sll-circular-2.i[22554,22567] [2021-10-11 02:30:00,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:00,554 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:00,611 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/sv-benchmarks/c/forester-heap/sll-circular-2.i[22324,22337] [2021-10-11 02:30:00,612 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/sv-benchmarks/c/forester-heap/sll-circular-2.i[22430,22443] [2021-10-11 02:30:00,614 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/sv-benchmarks/c/forester-heap/sll-circular-2.i[22554,22567] [2021-10-11 02:30:00,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:00,681 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:00,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00 WrapperNode [2021-10-11 02:30:00,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:00,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:00,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:00,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:00,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00" (1/1) ... [2021-10-11 02:30:00,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00" (1/1) ... [2021-10-11 02:30:00,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:00,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:00,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:00,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:00,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00" (1/1) ... [2021-10-11 02:30:00,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00" (1/1) ... [2021-10-11 02:30:00,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00" (1/1) ... [2021-10-11 02:30:00,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00" (1/1) ... [2021-10-11 02:30:00,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00" (1/1) ... [2021-10-11 02:30:00,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00" (1/1) ... [2021-10-11 02:30:00,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00" (1/1) ... [2021-10-11 02:30:00,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:00,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:00,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:00,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:00,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:30:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:30:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:30:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:30:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:30:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:30:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:30:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:30:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:00,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:01,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:01,669 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 02:30:01,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:01 BoogieIcfgContainer [2021-10-11 02:30:01,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:01,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:01,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:01,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:01,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:00" (1/3) ... [2021-10-11 02:30:01,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f419b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:01, skipping insertion in model container [2021-10-11 02:30:01,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:00" (2/3) ... [2021-10-11 02:30:01,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f419b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:01, skipping insertion in model container [2021-10-11 02:30:01,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:01" (3/3) ... [2021-10-11 02:30:01,682 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2021-10-11 02:30:01,697 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:01,701 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 46 error locations. [2021-10-11 02:30:01,712 INFO L253 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-10-11 02:30:01,744 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:01,745 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:30:01,745 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:01,745 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:01,745 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:01,745 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:01,746 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:01,746 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2021-10-11 02:30:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:30:01,782 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:01,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:30:01,783 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:01,790 INFO L82 PathProgramCache]: Analyzing trace with hash 7010, now seen corresponding path program 1 times [2021-10-11 02:30:01,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:01,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467877430] [2021-10-11 02:30:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:01,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467877430] [2021-10-11 02:30:01,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:01,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:30:01,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381792858] [2021-10-11 02:30:02,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:02,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:02,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:02,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:02,021 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2021-10-11 02:30:02,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:02,202 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2021-10-11 02:30:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:02,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2021-10-11 02:30:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:02,227 INFO L225 Difference]: With dead ends: 96 [2021-10-11 02:30:02,228 INFO L226 Difference]: Without dead ends: 95 [2021-10-11 02:30:02,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:02,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-11 02:30:02,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2021-10-11 02:30:02,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-10-11 02:30:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2021-10-11 02:30:02,284 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 2 [2021-10-11 02:30:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:02,285 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2021-10-11 02:30:02,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2021-10-11 02:30:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:30:02,285 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:02,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:30:02,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:30:02,287 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:02,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:02,290 INFO L82 PathProgramCache]: Analyzing trace with hash 7011, now seen corresponding path program 1 times [2021-10-11 02:30:02,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:02,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697961049] [2021-10-11 02:30:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:02,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697961049] [2021-10-11 02:30:02,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:02,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:30:02,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958475674] [2021-10-11 02:30:02,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:02,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:02,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:02,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:02,387 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 3 states. [2021-10-11 02:30:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:02,539 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2021-10-11 02:30:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:02,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2021-10-11 02:30:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:02,543 INFO L225 Difference]: With dead ends: 93 [2021-10-11 02:30:02,543 INFO L226 Difference]: Without dead ends: 93 [2021-10-11 02:30:02,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:02,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-11 02:30:02,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2021-10-11 02:30:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-10-11 02:30:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2021-10-11 02:30:02,552 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 2 [2021-10-11 02:30:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:02,552 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2021-10-11 02:30:02,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2021-10-11 02:30:02,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:30:02,553 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:02,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:30:02,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:30:02,558 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:02,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:02,559 INFO L82 PathProgramCache]: Analyzing trace with hash -2111003649, now seen corresponding path program 1 times [2021-10-11 02:30:02,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:02,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076535227] [2021-10-11 02:30:02,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:02,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076535227] [2021-10-11 02:30:02,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:02,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:02,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115479511] [2021-10-11 02:30:02,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:02,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:02,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:02,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:02,659 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 4 states. [2021-10-11 02:30:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:02,834 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-10-11 02:30:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:30:02,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:30:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:02,839 INFO L225 Difference]: With dead ends: 79 [2021-10-11 02:30:02,839 INFO L226 Difference]: Without dead ends: 79 [2021-10-11 02:30:02,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-11 02:30:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2021-10-11 02:30:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 02:30:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2021-10-11 02:30:02,846 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 6 [2021-10-11 02:30:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:02,850 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2021-10-11 02:30:02,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2021-10-11 02:30:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:30:02,851 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:02,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:30:02,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:30:02,853 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:02,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:02,854 INFO L82 PathProgramCache]: Analyzing trace with hash -2111003648, now seen corresponding path program 1 times [2021-10-11 02:30:02,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:02,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386922572] [2021-10-11 02:30:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:02,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386922572] [2021-10-11 02:30:02,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:02,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:02,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539941370] [2021-10-11 02:30:02,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:02,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:02,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:02,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:02,927 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 4 states. [2021-10-11 02:30:03,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:03,081 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2021-10-11 02:30:03,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:30:03,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:30:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:03,083 INFO L225 Difference]: With dead ends: 87 [2021-10-11 02:30:03,083 INFO L226 Difference]: Without dead ends: 87 [2021-10-11 02:30:03,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-11 02:30:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2021-10-11 02:30:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-10-11 02:30:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-10-11 02:30:03,105 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 6 [2021-10-11 02:30:03,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:03,106 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-10-11 02:30:03,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:03,106 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-10-11 02:30:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:30:03,109 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:03,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:03,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:30:03,110 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:03,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:03,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1449928007, now seen corresponding path program 1 times [2021-10-11 02:30:03,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:03,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349480727] [2021-10-11 02:30:03,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:03,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349480727] [2021-10-11 02:30:03,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:03,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:30:03,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743955423] [2021-10-11 02:30:03,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:03,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:03,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:03,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:03,218 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 5 states. [2021-10-11 02:30:03,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:03,484 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2021-10-11 02:30:03,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:03,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 02:30:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:03,486 INFO L225 Difference]: With dead ends: 119 [2021-10-11 02:30:03,487 INFO L226 Difference]: Without dead ends: 119 [2021-10-11 02:30:03,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:03,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-11 02:30:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 74. [2021-10-11 02:30:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:30:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-10-11 02:30:03,508 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 8 [2021-10-11 02:30:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:03,509 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-10-11 02:30:03,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:03,509 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-10-11 02:30:03,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:30:03,510 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:03,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:03,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:30:03,510 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:03,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:03,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1449928006, now seen corresponding path program 1 times [2021-10-11 02:30:03,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:03,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038600923] [2021-10-11 02:30:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:03,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038600923] [2021-10-11 02:30:03,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:03,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:30:03,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979235050] [2021-10-11 02:30:03,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:03,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:03,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:03,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:03,578 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 5 states. [2021-10-11 02:30:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:03,880 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2021-10-11 02:30:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:03,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 02:30:03,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:03,884 INFO L225 Difference]: With dead ends: 116 [2021-10-11 02:30:03,884 INFO L226 Difference]: Without dead ends: 116 [2021-10-11 02:30:03,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:30:03,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-11 02:30:03,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 64. [2021-10-11 02:30:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-10-11 02:30:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-10-11 02:30:03,890 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 8 [2021-10-11 02:30:03,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:03,890 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-10-11 02:30:03,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:03,891 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-10-11 02:30:03,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:30:03,891 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:03,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:03,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:30:03,892 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:03,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:03,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1998397112, now seen corresponding path program 1 times [2021-10-11 02:30:03,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:03,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088712658] [2021-10-11 02:30:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:04,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088712658] [2021-10-11 02:30:04,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:04,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:30:04,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544559294] [2021-10-11 02:30:04,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:30:04,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:04,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:30:04,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:04,042 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 7 states. [2021-10-11 02:30:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:04,353 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2021-10-11 02:30:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:30:04,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2021-10-11 02:30:04,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:04,354 INFO L225 Difference]: With dead ends: 144 [2021-10-11 02:30:04,354 INFO L226 Difference]: Without dead ends: 144 [2021-10-11 02:30:04,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:30:04,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-11 02:30:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 69. [2021-10-11 02:30:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-10-11 02:30:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2021-10-11 02:30:04,361 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 9 [2021-10-11 02:30:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:04,361 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2021-10-11 02:30:04,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:30:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2021-10-11 02:30:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:30:04,362 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:04,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:04,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:30:04,363 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:04,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1820764166, now seen corresponding path program 1 times [2021-10-11 02:30:04,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:04,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140333372] [2021-10-11 02:30:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:04,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140333372] [2021-10-11 02:30:04,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:04,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:30:04,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939514260] [2021-10-11 02:30:04,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:30:04,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:04,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:30:04,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:04,516 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 7 states. [2021-10-11 02:30:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:04,850 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2021-10-11 02:30:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:30:04,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-10-11 02:30:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:04,852 INFO L225 Difference]: With dead ends: 114 [2021-10-11 02:30:04,852 INFO L226 Difference]: Without dead ends: 114 [2021-10-11 02:30:04,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:30:04,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-11 02:30:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 84. [2021-10-11 02:30:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-10-11 02:30:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2021-10-11 02:30:04,857 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 10 [2021-10-11 02:30:04,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:04,858 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2021-10-11 02:30:04,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:30:04,858 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2021-10-11 02:30:04,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:30:04,859 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:04,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:04,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:30:04,860 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:04,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:04,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1820764165, now seen corresponding path program 1 times [2021-10-11 02:30:04,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:04,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939393390] [2021-10-11 02:30:04,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:05,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939393390] [2021-10-11 02:30:05,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:05,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:30:05,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401457893] [2021-10-11 02:30:05,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:30:05,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:05,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:30:05,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:05,030 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand 7 states. [2021-10-11 02:30:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:05,453 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2021-10-11 02:30:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:30:05,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-10-11 02:30:05,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:05,455 INFO L225 Difference]: With dead ends: 138 [2021-10-11 02:30:05,455 INFO L226 Difference]: Without dead ends: 138 [2021-10-11 02:30:05,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:30:05,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-11 02:30:05,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 98. [2021-10-11 02:30:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-10-11 02:30:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 126 transitions. [2021-10-11 02:30:05,459 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 126 transitions. Word has length 10 [2021-10-11 02:30:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:05,459 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 126 transitions. [2021-10-11 02:30:05,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:30:05,459 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 126 transitions. [2021-10-11 02:30:05,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:30:05,460 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:05,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:05,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:30:05,460 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:05,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:05,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1139164499, now seen corresponding path program 1 times [2021-10-11 02:30:05,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:05,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603687666] [2021-10-11 02:30:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:05,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603687666] [2021-10-11 02:30:05,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:05,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:30:05,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070214847] [2021-10-11 02:30:05,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:05,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:05,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:05,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:05,534 INFO L87 Difference]: Start difference. First operand 98 states and 126 transitions. Second operand 5 states. [2021-10-11 02:30:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:05,706 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2021-10-11 02:30:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:05,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:30:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:05,707 INFO L225 Difference]: With dead ends: 128 [2021-10-11 02:30:05,707 INFO L226 Difference]: Without dead ends: 128 [2021-10-11 02:30:05,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:30:05,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-11 02:30:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 96. [2021-10-11 02:30:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-10-11 02:30:05,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 124 transitions. [2021-10-11 02:30:05,711 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 124 transitions. Word has length 12 [2021-10-11 02:30:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:05,711 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 124 transitions. [2021-10-11 02:30:05,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:05,711 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 124 transitions. [2021-10-11 02:30:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:30:05,712 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:05,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:05,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:30:05,712 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:05,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:05,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1243211530, now seen corresponding path program 1 times [2021-10-11 02:30:05,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:05,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072856108] [2021-10-11 02:30:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:05,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072856108] [2021-10-11 02:30:05,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:05,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:30:05,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325377964] [2021-10-11 02:30:05,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:30:05,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:05,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:30:05,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:30:05,857 INFO L87 Difference]: Start difference. First operand 96 states and 124 transitions. Second operand 8 states. [2021-10-11 02:30:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:06,317 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2021-10-11 02:30:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:30:06,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2021-10-11 02:30:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:06,319 INFO L225 Difference]: With dead ends: 127 [2021-10-11 02:30:06,319 INFO L226 Difference]: Without dead ends: 127 [2021-10-11 02:30:06,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:30:06,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-11 02:30:06,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 96. [2021-10-11 02:30:06,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-10-11 02:30:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 123 transitions. [2021-10-11 02:30:06,323 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 123 transitions. Word has length 13 [2021-10-11 02:30:06,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:06,324 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 123 transitions. [2021-10-11 02:30:06,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:30:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 123 transitions. [2021-10-11 02:30:06,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:30:06,324 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:06,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:06,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:30:06,325 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:06,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:06,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1243211529, now seen corresponding path program 1 times [2021-10-11 02:30:06,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:06,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889632377] [2021-10-11 02:30:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:06,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889632377] [2021-10-11 02:30:06,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:06,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:30:06,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854322010] [2021-10-11 02:30:06,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:30:06,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:06,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:30:06,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:06,473 INFO L87 Difference]: Start difference. First operand 96 states and 123 transitions. Second operand 7 states. [2021-10-11 02:30:06,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:06,818 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2021-10-11 02:30:06,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:30:06,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-10-11 02:30:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:06,822 INFO L225 Difference]: With dead ends: 130 [2021-10-11 02:30:06,822 INFO L226 Difference]: Without dead ends: 130 [2021-10-11 02:30:06,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:30:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-11 02:30:06,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 96. [2021-10-11 02:30:06,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-10-11 02:30:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2021-10-11 02:30:06,829 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 13 [2021-10-11 02:30:06,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:06,829 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2021-10-11 02:30:06,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:30:06,829 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2021-10-11 02:30:06,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:30:06,832 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:06,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:06,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:30:06,840 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:06,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:06,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1263288390, now seen corresponding path program 1 times [2021-10-11 02:30:06,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:06,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087988504] [2021-10-11 02:30:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:06,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087988504] [2021-10-11 02:30:06,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:06,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:06,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964748052] [2021-10-11 02:30:06,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:06,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:06,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:06,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:06,884 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand 3 states. [2021-10-11 02:30:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:06,902 INFO L93 Difference]: Finished difference Result 154 states and 184 transitions. [2021-10-11 02:30:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:06,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-10-11 02:30:06,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:06,905 INFO L225 Difference]: With dead ends: 154 [2021-10-11 02:30:06,906 INFO L226 Difference]: Without dead ends: 154 [2021-10-11 02:30:06,906 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 [2021-10-11 02:30:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-11 02:30:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 106. [2021-10-11 02:30:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-10-11 02:30:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 134 transitions. [2021-10-11 02:30:06,912 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 134 transitions. Word has length 15 [2021-10-11 02:30:06,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:06,912 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 134 transitions. [2021-10-11 02:30:06,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 134 transitions. [2021-10-11 02:30:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:30:06,917 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:06,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:06,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:30:06,918 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:06,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:06,918 INFO L82 PathProgramCache]: Analyzing trace with hash -986057155, now seen corresponding path program 1 times [2021-10-11 02:30:06,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:06,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133287244] [2021-10-11 02:30:06,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:07,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133287244] [2021-10-11 02:30:07,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:07,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:30:07,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071096220] [2021-10-11 02:30:07,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:30:07,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:07,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:30:07,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:07,043 INFO L87 Difference]: Start difference. First operand 106 states and 134 transitions. Second operand 7 states. [2021-10-11 02:30:07,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:07,261 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2021-10-11 02:30:07,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:30:07,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-10-11 02:30:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:07,262 INFO L225 Difference]: With dead ends: 140 [2021-10-11 02:30:07,263 INFO L226 Difference]: Without dead ends: 140 [2021-10-11 02:30:07,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:30:07,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-11 02:30:07,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 107. [2021-10-11 02:30:07,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-10-11 02:30:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 135 transitions. [2021-10-11 02:30:07,267 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 135 transitions. Word has length 16 [2021-10-11 02:30:07,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:07,267 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 135 transitions. [2021-10-11 02:30:07,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:30:07,268 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 135 transitions. [2021-10-11 02:30:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:30:07,268 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:07,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:07,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 02:30:07,269 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:07,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:07,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1009003591, now seen corresponding path program 1 times [2021-10-11 02:30:07,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:07,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570016895] [2021-10-11 02:30:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:07,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570016895] [2021-10-11 02:30:07,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:07,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:30:07,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422580559] [2021-10-11 02:30:07,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:30:07,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:07,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:30:07,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:30:07,472 INFO L87 Difference]: Start difference. First operand 107 states and 135 transitions. Second operand 10 states. [2021-10-11 02:30:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:08,008 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2021-10-11 02:30:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:30:08,008 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2021-10-11 02:30:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:08,009 INFO L225 Difference]: With dead ends: 136 [2021-10-11 02:30:08,009 INFO L226 Difference]: Without dead ends: 136 [2021-10-11 02:30:08,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:30:08,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-11 02:30:08,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 113. [2021-10-11 02:30:08,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-10-11 02:30:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 143 transitions. [2021-10-11 02:30:08,014 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 143 transitions. Word has length 16 [2021-10-11 02:30:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:08,014 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 143 transitions. [2021-10-11 02:30:08,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:30:08,014 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 143 transitions. [2021-10-11 02:30:08,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:30:08,015 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:08,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:08,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 02:30:08,015 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:08,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:08,016 INFO L82 PathProgramCache]: Analyzing trace with hash -502923985, now seen corresponding path program 1 times [2021-10-11 02:30:08,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:08,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007063611] [2021-10-11 02:30:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:08,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007063611] [2021-10-11 02:30:08,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:08,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:30:08,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844012348] [2021-10-11 02:30:08,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:30:08,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:08,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:30:08,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:30:08,127 INFO L87 Difference]: Start difference. First operand 113 states and 143 transitions. Second operand 8 states. [2021-10-11 02:30:08,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:08,409 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-10-11 02:30:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:30:08,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-10-11 02:30:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:08,412 INFO L225 Difference]: With dead ends: 151 [2021-10-11 02:30:08,412 INFO L226 Difference]: Without dead ends: 151 [2021-10-11 02:30:08,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:30:08,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-11 02:30:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 115. [2021-10-11 02:30:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-10-11 02:30:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 145 transitions. [2021-10-11 02:30:08,416 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 145 transitions. Word has length 17 [2021-10-11 02:30:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:08,416 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 145 transitions. [2021-10-11 02:30:08,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:30:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 145 transitions. [2021-10-11 02:30:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:30:08,417 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:08,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:08,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-11 02:30:08,418 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:08,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:08,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1214712431, now seen corresponding path program 1 times [2021-10-11 02:30:08,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:08,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333466973] [2021-10-11 02:30:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:08,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333466973] [2021-10-11 02:30:08,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:08,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:30:08,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053724458] [2021-10-11 02:30:08,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:30:08,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:08,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:30:08,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:30:08,556 INFO L87 Difference]: Start difference. First operand 115 states and 145 transitions. Second operand 8 states. [2021-10-11 02:30:08,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:08,959 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2021-10-11 02:30:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:30:08,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-10-11 02:30:08,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:08,965 INFO L225 Difference]: With dead ends: 142 [2021-10-11 02:30:08,965 INFO L226 Difference]: Without dead ends: 142 [2021-10-11 02:30:08,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:30:08,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-11 02:30:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 115. [2021-10-11 02:30:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-10-11 02:30:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 144 transitions. [2021-10-11 02:30:08,969 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 144 transitions. Word has length 17 [2021-10-11 02:30:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:08,969 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 144 transitions. [2021-10-11 02:30:08,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:30:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 144 transitions. [2021-10-11 02:30:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:30:08,970 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:08,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:08,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-11 02:30:08,970 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:08,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1214712430, now seen corresponding path program 1 times [2021-10-11 02:30:08,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:08,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645662074] [2021-10-11 02:30:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:09,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645662074] [2021-10-11 02:30:09,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:09,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:30:09,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215619839] [2021-10-11 02:30:09,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:30:09,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:09,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:30:09,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:09,096 INFO L87 Difference]: Start difference. First operand 115 states and 144 transitions. Second operand 7 states. [2021-10-11 02:30:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:09,417 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2021-10-11 02:30:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:30:09,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2021-10-11 02:30:09,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:09,418 INFO L225 Difference]: With dead ends: 144 [2021-10-11 02:30:09,418 INFO L226 Difference]: Without dead ends: 144 [2021-10-11 02:30:09,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:30:09,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-11 02:30:09,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 115. [2021-10-11 02:30:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-10-11 02:30:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 143 transitions. [2021-10-11 02:30:09,422 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 143 transitions. Word has length 17 [2021-10-11 02:30:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:09,423 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 143 transitions. [2021-10-11 02:30:09,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:30:09,423 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 143 transitions. [2021-10-11 02:30:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:30:09,423 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:09,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:09,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-11 02:30:09,424 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:09,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:09,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1586853504, now seen corresponding path program 1 times [2021-10-11 02:30:09,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:09,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517805879] [2021-10-11 02:30:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:09,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517805879] [2021-10-11 02:30:09,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:09,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:30:09,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656276875] [2021-10-11 02:30:09,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:30:09,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:09,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:30:09,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:30:09,561 INFO L87 Difference]: Start difference. First operand 115 states and 143 transitions. Second operand 8 states. [2021-10-11 02:30:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:09,824 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2021-10-11 02:30:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:30:09,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2021-10-11 02:30:09,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:09,825 INFO L225 Difference]: With dead ends: 113 [2021-10-11 02:30:09,826 INFO L226 Difference]: Without dead ends: 113 [2021-10-11 02:30:09,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:30:09,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-11 02:30:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 100. [2021-10-11 02:30:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-10-11 02:30:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2021-10-11 02:30:09,839 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 18 [2021-10-11 02:30:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:09,840 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2021-10-11 02:30:09,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:30:09,840 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2021-10-11 02:30:09,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:30:09,840 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:09,840 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:09,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-11 02:30:09,841 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:09,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:09,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1228691407, now seen corresponding path program 1 times [2021-10-11 02:30:09,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:09,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382061309] [2021-10-11 02:30:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:10,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382061309] [2021-10-11 02:30:10,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408508145] [2021-10-11 02:30:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:10,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 02:30:10,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:10,244 INFO L348 Elim1Store]: treesize reduction 73, result has 33.0 percent of original size [2021-10-11 02:30:10,244 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2021-10-11 02:30:10,246 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:30:10,301 INFO L625 ElimStorePlain]: treesize reduction 10, result has 75.6 percent of original size [2021-10-11 02:30:10,311 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-10-11 02:30:10,315 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-10-11 02:30:10,317 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2021-10-11 02:30:10,319 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-10-11 02:30:10,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:31 [2021-10-11 02:30:10,322 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-10-11 02:30:10,324 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-10-11 02:30:10,326 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2021-10-11 02:30:10,366 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-10-11 02:30:10,368 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-10-11 02:30:10,370 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2021-10-11 02:30:10,418 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-10-11 02:30:10,420 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-10-11 02:30:10,422 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2021-10-11 02:30:10,538 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:30:10,584 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:30:10,585 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-10-11 02:30:10,592 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:30:10,600 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:30:10,619 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:30:10,619 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-10-11 02:30:10,624 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:30:10,628 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:30:10,664 INFO L625 ElimStorePlain]: treesize reduction 20, result has 42.9 percent of original size [2021-10-11 02:30:10,665 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:30:10,666 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:53, output treesize:15 [2021-10-11 02:30:10,717 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-11 02:30:10,718 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:30:10,730 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:30:10,735 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:30:10,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:23 [2021-10-11 02:30:10,834 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:30:10,838 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 50 [2021-10-11 02:30:10,844 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:30:10,854 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:30:10,855 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:30:10,855 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:23 [2021-10-11 02:30:10,919 INFO L348 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-11 02:30:10,919 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-11 02:30:10,923 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:30:10,932 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:30:10,933 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:30:10,933 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:23 [2021-10-11 02:30:11,025 INFO L348 Elim1Store]: treesize reduction 38, result has 56.3 percent of original size [2021-10-11 02:30:11,026 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 78 [2021-10-11 02:30:11,034 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2021-10-11 02:30:11,034 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-10-11 02:30:11,036 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:30:11,044 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:30:11,045 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:30:11,045 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:28 [2021-10-11 02:30:11,102 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:30:11,102 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 30 [2021-10-11 02:30:11,104 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:30:11,109 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:30:11,111 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:30:11,111 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:4 [2021-10-11 02:30:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:11,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:11,131 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:30:11,134 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:30:11,135 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:30:11,135 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2021-10-11 02:30:11,194 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:30:11,197 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:30:11,197 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:30:11,198 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:18 [2021-10-11 02:30:13,832 WARN L197 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 18 [2021-10-11 02:30:14,233 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 174 [2021-10-11 02:30:14,239 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-10-11 02:30:14,396 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2021-10-11 02:30:14,396 INFO L625 ElimStorePlain]: treesize reduction 51, result has 51.4 percent of original size [2021-10-11 02:30:14,399 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:30:14,401 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:30:14,404 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2021-10-11 02:30:14,404 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:15 [2021-10-11 02:30:14,408 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:30:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:14,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1145178069] [2021-10-11 02:30:14,556 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2021-10-11 02:30:14,557 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:30:14,561 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:30:14,567 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:30:14,567 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:30:15,246 WARN L220 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:15,362 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:16,578 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-10-11 02:30:17,576 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:30:17,851 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-10-11 02:30:18,094 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2021-10-11 02:30:18,381 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:18,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:30:18,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2021-10-11 02:30:18,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555018247] [2021-10-11 02:30:18,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-10-11 02:30:18,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:18,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-11 02:30:18,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=933, Unknown=2, NotChecked=0, Total=1056 [2021-10-11 02:30:18,384 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand 22 states. [2021-10-11 02:30:19,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:19,492 INFO L93 Difference]: Finished difference Result 195 states and 224 transitions. [2021-10-11 02:30:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:30:19,493 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 18 [2021-10-11 02:30:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:19,494 INFO L225 Difference]: With dead ends: 195 [2021-10-11 02:30:19,494 INFO L226 Difference]: Without dead ends: 195 [2021-10-11 02:30:19,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=246, Invalid=1474, Unknown=2, NotChecked=0, Total=1722 [2021-10-11 02:30:19,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-11 02:30:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 118. [2021-10-11 02:30:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-10-11 02:30:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2021-10-11 02:30:19,499 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 18 [2021-10-11 02:30:19,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:19,499 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2021-10-11 02:30:19,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-10-11 02:30:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2021-10-11 02:30:19,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:30:19,500 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:19,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:19,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-10-11 02:30:19,726 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-10-11 02:30:19,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:19,727 INFO L82 PathProgramCache]: Analyzing trace with hash 892529944, now seen corresponding path program 1 times [2021-10-11 02:30:19,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:19,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893649749] [2021-10-11 02:30:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:30:19,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:30:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:30:19,783 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:30:19,812 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:30:19,813 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:30:19,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-10-11 02:30:19,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:19 BoogieIcfgContainer [2021-10-11 02:30:19,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:19,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:19,860 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:19,860 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:19,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:01" (3/4) ... [2021-10-11 02:30:19,863 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:30:19,907 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5522a9c8-77e7-43ca-8a26-1254b4708979/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:30:19,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:19,908 INFO L168 Benchmark]: Toolchain (without parser) took 19888.47 ms. Allocated memory was 86.0 MB in the beginning and 224.4 MB in the end (delta: 138.4 MB). Free memory was 52.1 MB in the beginning and 159.0 MB in the end (delta: -106.9 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:19,908 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:19,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.47 ms. Allocated memory is still 86.0 MB. Free memory was 51.9 MB in the beginning and 50.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:19,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.07 ms. Allocated memory is still 86.0 MB. Free memory was 50.5 MB in the beginning and 48.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:19,909 INFO L168 Benchmark]: Boogie Preprocessor took 51.17 ms. Allocated memory is still 86.0 MB. Free memory was 48.4 MB in the beginning and 47.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:19,909 INFO L168 Benchmark]: RCFGBuilder took 852.18 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.0 MB in the beginning and 55.2 MB in the end (delta: -8.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:19,910 INFO L168 Benchmark]: TraceAbstraction took 18185.06 ms. Allocated memory was 104.9 MB in the beginning and 224.4 MB in the end (delta: 119.5 MB). Free memory was 54.7 MB in the beginning and 161.0 MB in the end (delta: -106.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:19,910 INFO L168 Benchmark]: Witness Printer took 47.74 ms. Allocated memory is still 224.4 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:19,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 658.47 ms. Allocated memory is still 86.0 MB. Free memory was 51.9 MB in the beginning and 50.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.07 ms. Allocated memory is still 86.0 MB. Free memory was 50.5 MB in the beginning and 48.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.17 ms. Allocated memory is still 86.0 MB. Free memory was 48.4 MB in the beginning and 47.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 852.18 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.0 MB in the beginning and 55.2 MB in the end (delta: -8.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18185.06 ms. Allocated memory was 104.9 MB in the beginning and 224.4 MB in the end (delta: 119.5 MB). Free memory was 54.7 MB in the beginning and 161.0 MB in the end (delta: -106.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * Witness Printer took 47.74 ms. Allocated memory is still 224.4 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1032]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = head [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int state = 1; [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state [L1027] EXPR head->next [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) [L1030] EXPR x->data [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data [L1032] EXPR x->data [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data [L1032] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1032] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 90 locations, 46 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.0s, OverallIterations: 21, TraceHistogramMax: 2, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1042 SDtfs, 3223 SDslu, 2550 SDs, 0 SdLazy, 3611 SolverSat, 470 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 42 SyntacticMatches, 6 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 668 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 247 ConstructedInterpolants, 14 QuantifiedInterpolants, 47079 SizeOfPredicates, 13 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 22 InterpolantComputations, 19 PerfectInterpolantSequences, 0/6 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 incorrect! Received shutdown request...