./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-sorted-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:45:55,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:45:55,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:45:55,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:45:55,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:45:55,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:45:55,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:45:55,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:45:55,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:45:55,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:45:55,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:45:55,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:45:55,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:45:55,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:45:55,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:45:55,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:45:55,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:45:55,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:45:55,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:45:55,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:45:55,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:45:55,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:45:55,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:45:55,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:45:55,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:45:55,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:45:55,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:45:55,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:45:55,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:45:55,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:45:55,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:45:55,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:45:55,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:45:55,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:45:55,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:45:55,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:45:55,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:45:55,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:45:55,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:45:55,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:45:55,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:45:55,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 18:45:55,696 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:45:55,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:45:55,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:45:55,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:45:55,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:45:55,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:45:55,699 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:45:55,699 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:45:55,699 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:45:55,699 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:45:55,701 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:45:55,701 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:45:55,701 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:45:55,701 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:45:55,702 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:45:55,702 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:45:55,702 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:45:55,703 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:45:55,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 18:45:55,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 18:45:55,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:45:55,704 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:45:55,705 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:45:55,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:45:55,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:45:55,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:45:55,707 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 18:45:55,708 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 18:45:55,708 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 18:45:55,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:45:55,709 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:45:55,709 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:45:55,709 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:45:55,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:45:55,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:45:55,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:45:55,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:45:55,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:45:55,711 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:45:55,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:45:55,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:45:55,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:45:55,712 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f [2021-11-25 18:45:56,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:45:56,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:45:56,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:45:56,081 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:45:56,082 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:45:56,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/forester-heap/sll-sorted-2.i [2021-11-25 18:45:56,155 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/data/8e4d5b842/33f240c3cf574a0880bad4897423427b/FLAG8e269a59e [2021-11-25 18:45:56,721 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:45:56,721 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i [2021-11-25 18:45:56,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/data/8e4d5b842/33f240c3cf574a0880bad4897423427b/FLAG8e269a59e [2021-11-25 18:45:57,036 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/data/8e4d5b842/33f240c3cf574a0880bad4897423427b [2021-11-25 18:45:57,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:45:57,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:45:57,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:45:57,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:45:57,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:45:57,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0d0db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57, skipping insertion in model container [2021-11-25 18:45:57,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:45:57,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:45:57,514 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2021-11-25 18:45:57,518 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2021-11-25 18:45:57,519 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2021-11-25 18:45:57,523 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2021-11-25 18:45:57,523 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2021-11-25 18:45:57,528 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2021-11-25 18:45:57,530 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2021-11-25 18:45:57,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:45:57,554 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:45:57,608 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2021-11-25 18:45:57,609 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2021-11-25 18:45:57,616 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2021-11-25 18:45:57,624 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2021-11-25 18:45:57,624 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2021-11-25 18:45:57,626 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2021-11-25 18:45:57,627 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2021-11-25 18:45:57,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:45:57,669 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:45:57,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57 WrapperNode [2021-11-25 18:45:57,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:45:57,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:45:57,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:45:57,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:45:57,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,759 INFO L137 Inliner]: procedures = 119, calls = 40, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 199 [2021-11-25 18:45:57,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:45:57,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:45:57,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:45:57,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:45:57,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:45:57,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:45:57,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:45:57,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:45:57,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57" (1/1) ... [2021-11-25 18:45:57,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:45:57,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:45:57,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:45:57,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:45:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:45:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:45:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:45:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:45:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:45:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:45:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:45:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:45:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:45:57,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:45:58,062 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:45:58,063 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:45:58,565 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:45:58,645 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:45:58,647 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-25 18:45:58,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:45:58 BoogieIcfgContainer [2021-11-25 18:45:58,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:45:58,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:45:58,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:45:58,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:45:58,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:45:57" (1/3) ... [2021-11-25 18:45:58,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87e0289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:45:58, skipping insertion in model container [2021-11-25 18:45:58,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:57" (2/3) ... [2021-11-25 18:45:58,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87e0289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:45:58, skipping insertion in model container [2021-11-25 18:45:58,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:45:58" (3/3) ... [2021-11-25 18:45:58,663 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2021-11-25 18:45:58,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:45:58,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-11-25 18:45:58,709 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:45:58,717 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:45:58,717 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-11-25 18:45:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 72 states have (on average 2.4722222222222223) internal successors, (178), 143 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-25 18:45:58,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:45:58,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-25 18:45:58,763 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:45:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:45:58,769 INFO L85 PathProgramCache]: Analyzing trace with hash 12218, now seen corresponding path program 1 times [2021-11-25 18:45:58,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:45:58,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874172040] [2021-11-25 18:45:58,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:45:58,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:45:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:45:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:45:58,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:45:58,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874172040] [2021-11-25 18:45:58,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874172040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:45:58,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:45:58,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:45:58,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303623974] [2021-11-25 18:45:58,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:45:58,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:45:58,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:45:58,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:45:58,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:45:58,995 INFO L87 Difference]: Start difference. First operand has 144 states, 72 states have (on average 2.4722222222222223) internal successors, (178), 143 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:59,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:45:59,213 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2021-11-25 18:45:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:45:59,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-11-25 18:45:59,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:45:59,232 INFO L225 Difference]: With dead ends: 146 [2021-11-25 18:45:59,234 INFO L226 Difference]: Without dead ends: 144 [2021-11-25 18:45:59,236 INFO L932 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 [2021-11-25 18:45:59,240 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 138 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:45:59,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 86 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:45:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-25 18:45:59,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2021-11-25 18:45:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 140 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 150 transitions. [2021-11-25 18:45:59,297 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 150 transitions. Word has length 2 [2021-11-25 18:45:59,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:45:59,297 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 150 transitions. [2021-11-25 18:45:59,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:59,297 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 150 transitions. [2021-11-25 18:45:59,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-25 18:45:59,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:45:59,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-25 18:45:59,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:45:59,298 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:45:59,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:45:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash 12219, now seen corresponding path program 1 times [2021-11-25 18:45:59,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:45:59,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84984062] [2021-11-25 18:45:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:45:59,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:45:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:45:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:45:59,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:45:59,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84984062] [2021-11-25 18:45:59,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84984062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:45:59,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:45:59,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:45:59,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205249522] [2021-11-25 18:45:59,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:45:59,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:45:59,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:45:59,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:45:59,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:45:59,369 INFO L87 Difference]: Start difference. First operand 141 states and 150 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:45:59,522 INFO L93 Difference]: Finished difference Result 142 states and 151 transitions. [2021-11-25 18:45:59,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:45:59,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-11-25 18:45:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:45:59,527 INFO L225 Difference]: With dead ends: 142 [2021-11-25 18:45:59,531 INFO L226 Difference]: Without dead ends: 142 [2021-11-25 18:45:59,531 INFO L932 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 [2021-11-25 18:45:59,533 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 135 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:45:59,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 86 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:45:59,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-25 18:45:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2021-11-25 18:45:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 72 states have (on average 2.0555555555555554) internal successors, (148), 138 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2021-11-25 18:45:59,548 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 2 [2021-11-25 18:45:59,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:45:59,548 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2021-11-25 18:45:59,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:59,549 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2021-11-25 18:45:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:45:59,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:45:59,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:45:59,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:45:59,550 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:45:59,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:45:59,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1591596380, now seen corresponding path program 1 times [2021-11-25 18:45:59,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:45:59,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833262066] [2021-11-25 18:45:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:45:59,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:45:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:45:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:45:59,626 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:45:59,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833262066] [2021-11-25 18:45:59,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833262066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:45:59,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:45:59,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:45:59,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187315704] [2021-11-25 18:45:59,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:45:59,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:45:59,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:45:59,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:45:59,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:45:59,629 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:59,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:45:59,837 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2021-11-25 18:45:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:45:59,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:45:59,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:45:59,839 INFO L225 Difference]: With dead ends: 144 [2021-11-25 18:45:59,840 INFO L226 Difference]: Without dead ends: 144 [2021-11-25 18:45:59,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:45:59,845 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 227 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:45:59,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 62 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:45:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-25 18:45:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 135. [2021-11-25 18:45:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 85 states have (on average 1.8235294117647058) internal successors, (155), 134 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:59,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 155 transitions. [2021-11-25 18:45:59,875 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 155 transitions. Word has length 6 [2021-11-25 18:45:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:45:59,875 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 155 transitions. [2021-11-25 18:45:59,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:45:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 155 transitions. [2021-11-25 18:45:59,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:45:59,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:45:59,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:45:59,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:45:59,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:45:59,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:45:59,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1591596379, now seen corresponding path program 1 times [2021-11-25 18:45:59,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:45:59,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701695852] [2021-11-25 18:45:59,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:45:59,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:45:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:00,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:00,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:00,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701695852] [2021-11-25 18:46:00,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701695852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:00,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:00,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:46:00,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159333547] [2021-11-25 18:46:00,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:00,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:46:00,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:00,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:46:00,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:46:00,026 INFO L87 Difference]: Start difference. First operand 135 states and 155 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:00,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:00,271 INFO L93 Difference]: Finished difference Result 201 states and 222 transitions. [2021-11-25 18:46:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:46:00,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:46:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:00,273 INFO L225 Difference]: With dead ends: 201 [2021-11-25 18:46:00,273 INFO L226 Difference]: Without dead ends: 201 [2021-11-25 18:46:00,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:00,275 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 253 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:00,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 107 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:46:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-25 18:46:00,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 175. [2021-11-25 18:46:00,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 125 states have (on average 1.688) internal successors, (211), 174 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2021-11-25 18:46:00,293 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 6 [2021-11-25 18:46:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:00,293 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-11-25 18:46:00,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2021-11-25 18:46:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:46:00,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:00,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:00,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:46:00,295 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:00,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:00,295 INFO L85 PathProgramCache]: Analyzing trace with hash -515790745, now seen corresponding path program 1 times [2021-11-25 18:46:00,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:00,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440672054] [2021-11-25 18:46:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:00,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:00,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:00,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440672054] [2021-11-25 18:46:00,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440672054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:00,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:00,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:46:00,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797767100] [2021-11-25 18:46:00,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:00,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:46:00,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:00,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:46:00,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:00,332 INFO L87 Difference]: Start difference. First operand 175 states and 211 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:00,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:00,376 INFO L93 Difference]: Finished difference Result 205 states and 243 transitions. [2021-11-25 18:46:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:46:00,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 18:46:00,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:00,383 INFO L225 Difference]: With dead ends: 205 [2021-11-25 18:46:00,384 INFO L226 Difference]: Without dead ends: 205 [2021-11-25 18:46:00,384 INFO L932 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 [2021-11-25 18:46:00,385 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 91 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:00,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 157 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:46:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-25 18:46:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 177. [2021-11-25 18:46:00,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 127 states have (on average 1.669291338582677) internal successors, (212), 176 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 212 transitions. [2021-11-25 18:46:00,416 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 212 transitions. Word has length 8 [2021-11-25 18:46:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:00,417 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 212 transitions. [2021-11-25 18:46:00,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:00,417 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 212 transitions. [2021-11-25 18:46:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:46:00,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:00,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:00,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:46:00,419 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:00,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:00,420 INFO L85 PathProgramCache]: Analyzing trace with hash -515426526, now seen corresponding path program 1 times [2021-11-25 18:46:00,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:00,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237080479] [2021-11-25 18:46:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:00,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:00,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:00,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237080479] [2021-11-25 18:46:00,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237080479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:00,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:00,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:46:00,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516934478] [2021-11-25 18:46:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:00,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:46:00,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:00,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:46:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:00,485 INFO L87 Difference]: Start difference. First operand 177 states and 212 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:00,668 INFO L93 Difference]: Finished difference Result 182 states and 217 transitions. [2021-11-25 18:46:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:46:00,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 18:46:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:00,671 INFO L225 Difference]: With dead ends: 182 [2021-11-25 18:46:00,671 INFO L226 Difference]: Without dead ends: 182 [2021-11-25 18:46:00,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:46:00,680 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 85 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:00,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 207 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:46:00,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-25 18:46:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2021-11-25 18:46:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 127 states have (on average 1.6614173228346456) internal successors, (211), 175 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2021-11-25 18:46:00,689 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 8 [2021-11-25 18:46:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:00,689 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2021-11-25 18:46:00,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2021-11-25 18:46:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:46:00,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:00,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:00,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:46:00,692 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash -515426525, now seen corresponding path program 1 times [2021-11-25 18:46:00,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:00,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496950685] [2021-11-25 18:46:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:00,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:00,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:00,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496950685] [2021-11-25 18:46:00,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496950685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:00,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:00,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:46:00,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274827659] [2021-11-25 18:46:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:00,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:46:00,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:00,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:46:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:00,828 INFO L87 Difference]: Start difference. First operand 176 states and 211 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:01,011 INFO L93 Difference]: Finished difference Result 171 states and 206 transitions. [2021-11-25 18:46:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:46:01,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 18:46:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:01,013 INFO L225 Difference]: With dead ends: 171 [2021-11-25 18:46:01,013 INFO L226 Difference]: Without dead ends: 171 [2021-11-25 18:46:01,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:46:01,014 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 7 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:01,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 279 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:46:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-25 18:46:01,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-11-25 18:46:01,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 123 states have (on average 1.6422764227642277) internal successors, (202), 166 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 202 transitions. [2021-11-25 18:46:01,018 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 202 transitions. Word has length 8 [2021-11-25 18:46:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:01,018 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 202 transitions. [2021-11-25 18:46:01,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 202 transitions. [2021-11-25 18:46:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:46:01,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:01,019 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:01,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:46:01,019 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:01,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:01,020 INFO L85 PathProgramCache]: Analyzing trace with hash -971190285, now seen corresponding path program 1 times [2021-11-25 18:46:01,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:01,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043828460] [2021-11-25 18:46:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:01,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:46:01,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:01,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043828460] [2021-11-25 18:46:01,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043828460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:01,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:01,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:46:01,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180769196] [2021-11-25 18:46:01,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:01,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:46:01,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:01,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:46:01,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:46:01,074 INFO L87 Difference]: Start difference. First operand 167 states and 202 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:01,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:01,200 INFO L93 Difference]: Finished difference Result 192 states and 211 transitions. [2021-11-25 18:46:01,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:46:01,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-25 18:46:01,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:01,201 INFO L225 Difference]: With dead ends: 192 [2021-11-25 18:46:01,202 INFO L226 Difference]: Without dead ends: 192 [2021-11-25 18:46:01,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:01,203 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 232 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:01,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 147 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:46:01,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-25 18:46:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 165. [2021-11-25 18:46:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 122 states have (on average 1.6229508196721312) internal successors, (198), 164 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 198 transitions. [2021-11-25 18:46:01,209 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 198 transitions. Word has length 15 [2021-11-25 18:46:01,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:01,209 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 198 transitions. [2021-11-25 18:46:01,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:01,209 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 198 transitions. [2021-11-25 18:46:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 18:46:01,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:01,210 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:01,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:46:01,210 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1767732735, now seen corresponding path program 1 times [2021-11-25 18:46:01,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:01,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176532574] [2021-11-25 18:46:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:01,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:01,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:01,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176532574] [2021-11-25 18:46:01,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176532574] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:46:01,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57132655] [2021-11-25 18:46:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:01,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:46:01,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:46:01,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:46:01,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:46:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:01,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 18:46:01,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:01,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:01,792 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:01,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:01,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:02,035 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:46:02,035 INFO L388 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 31 treesize of output 29 [2021-11-25 18:46:02,102 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:46:02,102 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-11-25 18:46:02,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:02,326 INFO L388 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:46:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:02,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:46:02,713 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:02,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 20 treesize of output 21 [2021-11-25 18:46:02,725 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:02,725 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-11-25 18:46:02,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 9 [2021-11-25 18:46:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:03,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57132655] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:46:03,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1769391487] [2021-11-25 18:46:03,835 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-25 18:46:03,836 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:46:03,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:46:03,845 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:46:03,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:46:03,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:03,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:03,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:46:03,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:03,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-25 18:46:03,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:03,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:03,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:03,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 18:46:03,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 18:46:04,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 18:46:04,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-25 18:46:04,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 18:46:04,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 18:46:04,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:46:04,170 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:46:04,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:04,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:46:04,206 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 18:46:04,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2021-11-25 18:46:04,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,275 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:46:04,275 INFO L388 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 83 treesize of output 50 [2021-11-25 18:46:04,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-25 18:46:04,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-25 18:46:04,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 52 [2021-11-25 18:46:04,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:04,409 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:46:04,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2021-11-25 18:46:04,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 86 [2021-11-25 18:46:04,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:04,512 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-25 18:46:04,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 199 treesize of output 120 [2021-11-25 18:46:04,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2021-11-25 18:46:04,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 18:46:04,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:04,690 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 18:46:04,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 483 treesize of output 364 [2021-11-25 18:46:04,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:04,749 INFO L354 Elim1Store]: treesize reduction 78, result has 27.1 percent of original size [2021-11-25 18:46:04,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 477 treesize of output 479 [2021-11-25 18:46:04,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:04,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:04,778 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-25 18:46:04,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 475 treesize of output 449 [2021-11-25 18:46:05,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:05,123 INFO L354 Elim1Store]: treesize reduction 278, result has 12.0 percent of original size [2021-11-25 18:46:05,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 930 treesize of output 897 [2021-11-25 18:46:05,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:05,526 INFO L354 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2021-11-25 18:46:05,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 1166 treesize of output 851 [2021-11-25 18:46:05,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:05,613 INFO L354 Elim1Store]: treesize reduction 100, result has 16.0 percent of original size [2021-11-25 18:46:05,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 1038 treesize of output 988 [2021-11-25 18:46:05,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:05,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:05,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:05,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:05,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:05,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:05,722 INFO L354 Elim1Store]: treesize reduction 176, result has 16.6 percent of original size [2021-11-25 18:46:05,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 1035 treesize of output 993 [2021-11-25 18:46:06,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:06,307 INFO L354 Elim1Store]: treesize reduction 184, result has 15.2 percent of original size [2021-11-25 18:46:06,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 909 treesize of output 538 [2021-11-25 18:46:06,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:06,426 INFO L354 Elim1Store]: treesize reduction 204, result has 13.9 percent of original size [2021-11-25 18:46:06,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 884 treesize of output 733 [2021-11-25 18:46:06,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:06,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:06,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:06,610 INFO L354 Elim1Store]: treesize reduction 576, result has 10.4 percent of original size [2021-11-25 18:46:06,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 789 treesize of output 764 [2021-11-25 18:46:06,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:46:06,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:07,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:07,046 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:07,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:07,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 18:46:07,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:07,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:07,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:46:07,092 INFO L388 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 [2021-11-25 18:46:07,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:07,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:46:07,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:07,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:07,262 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:46:07,262 INFO L388 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 60 treesize of output 39 [2021-11-25 18:46:07,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:07,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:07,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:46:07,639 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:07,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:07,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 18:46:07,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:07,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:07,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:46:07,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:46:07,809 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:46:07,809 INFO L388 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 71 treesize of output 54 [2021-11-25 18:46:07,839 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:46:07,839 INFO L388 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 19 treesize of output 26 [2021-11-25 18:46:07,921 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:46:09,245 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2991#(and (not (= (select |#valid| |ULTIMATE.start_main_#t~mem7#1.base|) 1)) (or (not (= |ULTIMATE.start_main_#t~mem6#1.base| 0)) (not (= |ULTIMATE.start_main_#t~mem6#1.offset| 0))) (<= (+ |ULTIMATE.start_main_~x~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~x~0#1.base|)) (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~x~0#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) |ULTIMATE.start_main_#t~mem6#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) |ULTIMATE.start_main_#t~mem7#1.offset|) (= |ULTIMATE.start_main_~marked~0#1| 0) (= |ULTIMATE.start_main_~x~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~x~0#1.base|) 1) |ULTIMATE.start_main_#t~short9#1| (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (= |ULTIMATE.start_main_#t~mem7#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) (= |ULTIMATE.start_main_#t~mem6#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:46:09,245 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:46:09,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:46:09,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2021-11-25 18:46:09,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596525519] [2021-11-25 18:46:09,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:46:09,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 18:46:09,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 18:46:09,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1601, Unknown=4, NotChecked=0, Total=1806 [2021-11-25 18:46:09,249 INFO L87 Difference]: Start difference. First operand 165 states and 198 transitions. Second operand has 27 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:10,133 INFO L93 Difference]: Finished difference Result 294 states and 339 transitions. [2021-11-25 18:46:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 18:46:10,133 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-25 18:46:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:10,135 INFO L225 Difference]: With dead ends: 294 [2021-11-25 18:46:10,135 INFO L226 Difference]: Without dead ends: 294 [2021-11-25 18:46:10,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=359, Invalid=2607, Unknown=4, NotChecked=0, Total=2970 [2021-11-25 18:46:10,138 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 758 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 595 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:10,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 920 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 807 Invalid, 0 Unknown, 595 Unchecked, 0.6s Time] [2021-11-25 18:46:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-25 18:46:10,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 192. [2021-11-25 18:46:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 149 states have (on average 1.570469798657718) internal successors, (234), 191 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 234 transitions. [2021-11-25 18:46:10,146 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 234 transitions. Word has length 20 [2021-11-25 18:46:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:10,147 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 234 transitions. [2021-11-25 18:46:10,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:10,147 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 234 transitions. [2021-11-25 18:46:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 18:46:10,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:10,149 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:10,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:46:10,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:46:10,375 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:10,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1767732736, now seen corresponding path program 1 times [2021-11-25 18:46:10,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:10,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514740119] [2021-11-25 18:46:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:10,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:10,601 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:10,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514740119] [2021-11-25 18:46:10,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514740119] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:46:10,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660698749] [2021-11-25 18:46:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:10,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:46:10,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:46:10,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:46:10,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:46:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:10,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-25 18:46:10,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:10,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:10,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:10,795 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:46:10,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 18:46:10,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:10,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:10,933 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:46:10,933 INFO L388 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 14 treesize of output 20 [2021-11-25 18:46:10,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-11-25 18:46:10,955 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:46:10,955 INFO L388 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 31 treesize of output 29 [2021-11-25 18:46:11,013 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:46:11,014 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 18:46:11,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 18:46:11,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:11,214 INFO L388 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:46:11,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:11,221 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:11,222 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2021-11-25 18:46:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:11,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:46:11,810 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:11,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 58 treesize of output 51 [2021-11-25 18:46:11,818 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:11,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 51 treesize of output 51 [2021-11-25 18:46:11,828 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:11,828 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 77 [2021-11-25 18:46:11,843 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:11,843 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 120 [2021-11-25 18:46:11,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 89 treesize of output 85 [2021-11-25 18:46:11,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 85 treesize of output 81 [2021-11-25 18:46:11,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 81 treesize of output 79 [2021-11-25 18:46:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:12,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660698749] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:46:12,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1931593086] [2021-11-25 18:46:12,314 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-25 18:46:12,314 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:46:12,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:46:12,315 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:46:12,315 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:46:12,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:46:12,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-25 18:46:12,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:12,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:12,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 18:46:12,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 18:46:12,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 18:46:12,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-25 18:46:12,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 18:46:12,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:46:12,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 18:46:12,534 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:46:12,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:12,552 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 18:46:12,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2021-11-25 18:46:12,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:46:12,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-25 18:46:12,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-25 18:46:12,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-25 18:46:12,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2021-11-25 18:46:12,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:12,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:12,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2021-11-25 18:46:12,798 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-25 18:46:12,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 199 treesize of output 120 [2021-11-25 18:46:12,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2021-11-25 18:46:12,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 18:46:12,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:12,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:12,938 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-25 18:46:12,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 415 treesize of output 360 [2021-11-25 18:46:12,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:12,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:12,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:12,987 INFO L354 Elim1Store]: treesize reduction 50, result has 36.7 percent of original size [2021-11-25 18:46:12,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 409 treesize of output 411 [2021-11-25 18:46:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:13,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:13,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:13,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:13,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:13,012 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 18:46:13,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 407 treesize of output 389 [2021-11-25 18:46:13,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:13,217 INFO L354 Elim1Store]: treesize reduction 156, result has 13.8 percent of original size [2021-11-25 18:46:13,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 417 treesize of output 419 [2021-11-25 18:46:13,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:13,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:13,408 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-25 18:46:13,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 469 treesize of output 422 [2021-11-25 18:46:13,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:13,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:13,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:13,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:13,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:13,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:13,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:13,466 INFO L354 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-11-25 18:46:13,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 482 treesize of output 468 [2021-11-25 18:46:13,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:13,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:13,524 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-25 18:46:13,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 469 treesize of output 459 [2021-11-25 18:46:13,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:13,885 INFO L354 Elim1Store]: treesize reduction 100, result has 20.6 percent of original size [2021-11-25 18:46:13,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 856 treesize of output 506 [2021-11-25 18:46:13,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:13,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:13,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:14,017 INFO L354 Elim1Store]: treesize reduction 350, result has 14.6 percent of original size [2021-11-25 18:46:14,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 740 treesize of output 718 [2021-11-25 18:46:14,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:14,093 INFO L354 Elim1Store]: treesize reduction 152, result has 23.2 percent of original size [2021-11-25 18:46:14,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 771 treesize of output 719 [2021-11-25 18:46:14,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:46:14,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:14,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:14,431 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:46:14,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-25 18:46:14,453 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:14,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:14,471 INFO L388 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 [2021-11-25 18:46:14,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:14,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:14,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:46:14,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:14,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:46:14,644 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:46:14,645 INFO L388 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 60 treesize of output 39 [2021-11-25 18:46:14,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:14,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:14,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:14,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:14,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:46:15,011 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:46:15,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-25 18:46:15,040 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:15,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:15,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:15,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:46:15,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:15,188 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:46:15,188 INFO L388 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 71 treesize of output 54 [2021-11-25 18:46:15,214 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:46:15,214 INFO L388 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 19 treesize of output 26 [2021-11-25 18:46:15,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:46:15,290 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:46:16,669 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3662#(and (or (not (= |ULTIMATE.start_main_#t~mem6#1.base| 0)) (not (= |ULTIMATE.start_main_#t~mem6#1.offset| 0))) (<= (+ |ULTIMATE.start_main_~x~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~x~0#1.base|)) (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~x~0#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) |ULTIMATE.start_main_#t~mem6#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) |ULTIMATE.start_main_#t~mem7#1.offset|) (= |ULTIMATE.start_main_~marked~0#1| 0) (= |ULTIMATE.start_main_~x~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (or (< (select |#length| |ULTIMATE.start_main_#t~mem7#1.base|) (+ |ULTIMATE.start_main_#t~mem7#1.offset| 8)) (< (+ |ULTIMATE.start_main_#t~mem7#1.offset| 4) 0)) (= (select |#valid| |ULTIMATE.start_main_~x~0#1.base|) 1) |ULTIMATE.start_main_#t~short9#1| (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (= |ULTIMATE.start_main_#t~mem7#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) (= |ULTIMATE.start_main_#t~mem6#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:46:16,669 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:46:16,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:46:16,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 27 [2021-11-25 18:46:16,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029105028] [2021-11-25 18:46:16,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:46:16,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-25 18:46:16,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-25 18:46:16,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1697, Unknown=3, NotChecked=0, Total=1892 [2021-11-25 18:46:16,672 INFO L87 Difference]: Start difference. First operand 192 states and 234 transitions. Second operand has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 28 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:17,533 INFO L93 Difference]: Finished difference Result 243 states and 288 transitions. [2021-11-25 18:46:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:46:17,534 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 28 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-25 18:46:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:17,535 INFO L225 Difference]: With dead ends: 243 [2021-11-25 18:46:17,535 INFO L226 Difference]: Without dead ends: 243 [2021-11-25 18:46:17,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=321, Invalid=2432, Unknown=3, NotChecked=0, Total=2756 [2021-11-25 18:46:17,537 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 357 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:17,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 923 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 858 Invalid, 0 Unknown, 316 Unchecked, 0.6s Time] [2021-11-25 18:46:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-25 18:46:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 192. [2021-11-25 18:46:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 149 states have (on average 1.563758389261745) internal successors, (233), 191 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:17,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 233 transitions. [2021-11-25 18:46:17,542 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 233 transitions. Word has length 20 [2021-11-25 18:46:17,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:17,544 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 233 transitions. [2021-11-25 18:46:17,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 28 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 233 transitions. [2021-11-25 18:46:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 18:46:17,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:17,545 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:17,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-25 18:46:17,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:46:17,754 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:17,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:17,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2007145239, now seen corresponding path program 1 times [2021-11-25 18:46:17,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:17,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673500160] [2021-11-25 18:46:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:17,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:46:17,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:17,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673500160] [2021-11-25 18:46:17,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673500160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:17,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:17,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:46:17,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721033110] [2021-11-25 18:46:17,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:17,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:46:17,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:17,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:46:17,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:17,820 INFO L87 Difference]: Start difference. First operand 192 states and 233 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:17,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:17,855 INFO L93 Difference]: Finished difference Result 195 states and 236 transitions. [2021-11-25 18:46:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:46:17,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-25 18:46:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:17,857 INFO L225 Difference]: With dead ends: 195 [2021-11-25 18:46:17,858 INFO L226 Difference]: Without dead ends: 195 [2021-11-25 18:46:17,858 INFO L932 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 [2021-11-25 18:46:17,859 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:17,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:46:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-25 18:46:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-25 18:46:17,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 152 states have (on average 1.5526315789473684) internal successors, (236), 194 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 236 transitions. [2021-11-25 18:46:17,866 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 236 transitions. Word has length 22 [2021-11-25 18:46:17,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:17,866 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 236 transitions. [2021-11-25 18:46:17,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:17,867 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 236 transitions. [2021-11-25 18:46:17,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 18:46:17,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:17,869 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:17,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:46:17,870 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:17,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:17,871 INFO L85 PathProgramCache]: Analyzing trace with hash -2085481638, now seen corresponding path program 1 times [2021-11-25 18:46:17,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:17,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565206225] [2021-11-25 18:46:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:17,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:46:17,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:17,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565206225] [2021-11-25 18:46:17,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565206225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:17,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:17,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:46:17,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994849542] [2021-11-25 18:46:17,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:17,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:46:17,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:17,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:46:17,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:17,954 INFO L87 Difference]: Start difference. First operand 195 states and 236 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:18,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:18,097 INFO L93 Difference]: Finished difference Result 208 states and 251 transitions. [2021-11-25 18:46:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:46:18,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-25 18:46:18,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:18,099 INFO L225 Difference]: With dead ends: 208 [2021-11-25 18:46:18,099 INFO L226 Difference]: Without dead ends: 208 [2021-11-25 18:46:18,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:46:18,100 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 17 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:18,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 299 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:46:18,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-25 18:46:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2021-11-25 18:46:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 155 states have (on average 1.5483870967741935) internal successors, (240), 197 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 240 transitions. [2021-11-25 18:46:18,108 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 240 transitions. Word has length 23 [2021-11-25 18:46:18,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:18,109 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 240 transitions. [2021-11-25 18:46:18,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 240 transitions. [2021-11-25 18:46:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 18:46:18,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:18,114 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:18,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:46:18,115 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2085489583, now seen corresponding path program 1 times [2021-11-25 18:46:18,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:18,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5001699] [2021-11-25 18:46:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:18,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:46:18,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:18,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5001699] [2021-11-25 18:46:18,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5001699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:18,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:18,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:46:18,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122844465] [2021-11-25 18:46:18,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:18,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:46:18,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:18,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:46:18,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:18,174 INFO L87 Difference]: Start difference. First operand 198 states and 240 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:18,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:18,249 INFO L93 Difference]: Finished difference Result 195 states and 234 transitions. [2021-11-25 18:46:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:46:18,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-25 18:46:18,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:18,252 INFO L225 Difference]: With dead ends: 195 [2021-11-25 18:46:18,252 INFO L226 Difference]: Without dead ends: 195 [2021-11-25 18:46:18,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:18,256 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 69 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:18,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 103 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:46:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-25 18:46:18,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-25 18:46:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 155 states have (on average 1.5096774193548388) internal successors, (234), 194 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 234 transitions. [2021-11-25 18:46:18,263 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 234 transitions. Word has length 23 [2021-11-25 18:46:18,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:18,263 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 234 transitions. [2021-11-25 18:46:18,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:18,264 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 234 transitions. [2021-11-25 18:46:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 18:46:18,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:18,266 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:18,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:46:18,266 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:18,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2085489584, now seen corresponding path program 1 times [2021-11-25 18:46:18,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:18,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060397852] [2021-11-25 18:46:18,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:18,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:18,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:46:18,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:18,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060397852] [2021-11-25 18:46:18,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060397852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:18,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:18,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:46:18,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102527078] [2021-11-25 18:46:18,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:18,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:46:18,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:18,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:46:18,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:18,328 INFO L87 Difference]: Start difference. First operand 195 states and 234 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:18,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:18,385 INFO L93 Difference]: Finished difference Result 193 states and 228 transitions. [2021-11-25 18:46:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:46:18,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-25 18:46:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:18,387 INFO L225 Difference]: With dead ends: 193 [2021-11-25 18:46:18,387 INFO L226 Difference]: Without dead ends: 193 [2021-11-25 18:46:18,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:18,389 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 59 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:18,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 122 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:46:18,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-25 18:46:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2021-11-25 18:46:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 155 states have (on average 1.4709677419354839) internal successors, (228), 191 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 228 transitions. [2021-11-25 18:46:18,395 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 228 transitions. Word has length 23 [2021-11-25 18:46:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:18,396 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 228 transitions. [2021-11-25 18:46:18,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 228 transitions. [2021-11-25 18:46:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 18:46:18,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:18,399 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:18,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:46:18,400 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:18,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:18,400 INFO L85 PathProgramCache]: Analyzing trace with hash 23491263, now seen corresponding path program 1 times [2021-11-25 18:46:18,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:18,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684728172] [2021-11-25 18:46:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:18,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:18,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:18,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684728172] [2021-11-25 18:46:18,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684728172] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:46:18,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017851785] [2021-11-25 18:46:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:18,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:46:18,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:46:18,799 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:46:18,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:46:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:18,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 18:46:18,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:18,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:18,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:46:18,965 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:46:18,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 18:46:19,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:19,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 18:46:19,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:19,070 INFO L388 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 16 treesize of output 8 [2021-11-25 18:46:19,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 18:46:19,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 18:46:19,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:19,300 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:19,300 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2021-11-25 18:46:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:19,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:46:19,492 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_140| Int) (v_ArrVal_497 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_140| 0) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_497) |c_ULTIMATE.start_main_~head~0#1.base|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_140|)) 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_140|))) is different from false [2021-11-25 18:46:19,540 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_140| Int) (v_ArrVal_497 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_140| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_140|) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_497) |c_ULTIMATE.start_main_~head~0#1.base|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_140|)) 0))) is different from false [2021-11-25 18:46:19,561 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_492 Int) (|v_ULTIMATE.start_main_~x~0#1.offset_140| Int) (v_ArrVal_497 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_140| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_140|) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_492)) |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_497) |c_ULTIMATE.start_main_~head~0#1.base|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_140|)) 0))) is different from false [2021-11-25 18:46:19,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:19,740 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:19,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2021-11-25 18:46:19,756 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:19,756 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2021-11-25 18:46:19,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2021-11-25 18:46:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:19,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017851785] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:46:19,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1038814590] [2021-11-25 18:46:19,879 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 18:46:19,880 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:46:19,880 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:46:19,880 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:46:19,880 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:46:19,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:19,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:19,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:46:19,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:19,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:19,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-25 18:46:19,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:19,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:19,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 18:46:19,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:19,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 18:46:19,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:19,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 18:46:20,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-25 18:46:20,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 18:46:20,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:46:20,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 18:46:20,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,109 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-25 18:46:20,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 43 [2021-11-25 18:46:20,131 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:46:20,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2021-11-25 18:46:20,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:20,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-25 18:46:20,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2021-11-25 18:46:20,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 24 [2021-11-25 18:46:20,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2021-11-25 18:46:20,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:20,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 55 [2021-11-25 18:46:20,406 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-25 18:46:20,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 279 treesize of output 172 [2021-11-25 18:46:20,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 96 [2021-11-25 18:46:20,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 61 [2021-11-25 18:46:20,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:46:20,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:20,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:20,528 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:20,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:20,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 18:46:20,545 INFO L388 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 [2021-11-25 18:46:20,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:46:20,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:20,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:46:20,616 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:46:20,616 INFO L388 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 60 treesize of output 39 [2021-11-25 18:46:20,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:20,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:20,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:20,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:20,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:46:20,951 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:46:20,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-25 18:46:20,972 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:20,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:21,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:21,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:21,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:21,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:21,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:21,127 INFO L354 Elim1Store]: treesize reduction 80, result has 38.5 percent of original size [2021-11-25 18:46:21,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 206 treesize of output 229 [2021-11-25 18:46:21,163 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:46:21,163 INFO L388 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 188 treesize of output 195 [2021-11-25 18:46:21,196 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:46:21,197 INFO L388 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 224 treesize of output 231 [2021-11-25 18:46:22,318 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:46:22,318 INFO L388 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 19 treesize of output 26 [2021-11-25 18:46:22,353 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:46:22,353 INFO L388 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 19 treesize of output 26 [2021-11-25 18:46:26,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:46:26,265 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:46:29,016 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5892#(and (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 4)) 0) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 4)) (exists ((|v_ULTIMATE.start_main_~x~0#1.base_168| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_146| Int)) (and (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_146|) (<= (+ 8 |v_ULTIMATE.start_main_~x~0#1.offset_146|) (select |#length| |v_ULTIMATE.start_main_~x~0#1.base_168|)) (= (select |#valid| |v_ULTIMATE.start_main_~x~0#1.base_168|) 1) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~x~0#1.base_168|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_146|)) 1))) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 0))) (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~marked~0#1| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 0)) (= |ULTIMATE.start_main_~x~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~x~0#1.base|) 1) (<= (+ 8 |ULTIMATE.start_main_~x~0#1.offset|) (select |#length| |ULTIMATE.start_main_~x~0#1.base|)) (<= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 8) (select |#length| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|))) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (<= 0 |#StackHeapBarrier|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) 1) (= |#NULL.base| 0))' at error location [2021-11-25 18:46:29,016 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:46:29,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:46:29,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 29 [2021-11-25 18:46:29,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902571793] [2021-11-25 18:46:29,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:46:29,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-25 18:46:29,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:29,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-25 18:46:29,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1923, Unknown=4, NotChecked=276, Total=2450 [2021-11-25 18:46:29,019 INFO L87 Difference]: Start difference. First operand 192 states and 228 transitions. Second operand has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:29,517 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_#t~malloc3#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (= |c_ULTIMATE.start_main_~head~0#1.offset| |c_ULTIMATE.start_main_~x~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (<= 0 |c_ULTIMATE.start_main_~x~0#1.offset|) (<= |c_ULTIMATE.start_main_~x~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) 4) 0) (= |c_ULTIMATE.start_main_~marked~0#1| 0) (= |c_ULTIMATE.start_main_#t~malloc3#1.offset| 0) (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (forall ((v_ArrVal_492 Int) (|v_ULTIMATE.start_main_~x~0#1.offset_140| Int) (v_ArrVal_497 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_140| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_140|) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_492)) |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_497) |c_ULTIMATE.start_main_~head~0#1.base|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_140|)) 0))) (= |c_ULTIMATE.start_main_~head~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|) 1)) is different from false [2021-11-25 18:46:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:31,060 INFO L93 Difference]: Finished difference Result 318 states and 368 transitions. [2021-11-25 18:46:31,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 18:46:31,060 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-25 18:46:31,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:31,062 INFO L225 Difference]: With dead ends: 318 [2021-11-25 18:46:31,062 INFO L226 Difference]: Without dead ends: 318 [2021-11-25 18:46:31,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=549, Invalid=3620, Unknown=7, NotChecked=516, Total=4692 [2021-11-25 18:46:31,067 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 427 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 712 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:31,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 955 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 882 Invalid, 0 Unknown, 712 Unchecked, 0.6s Time] [2021-11-25 18:46:31,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-25 18:46:31,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 187. [2021-11-25 18:46:31,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 150 states have (on average 1.4666666666666666) internal successors, (220), 186 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 220 transitions. [2021-11-25 18:46:31,075 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 220 transitions. Word has length 24 [2021-11-25 18:46:31,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:31,077 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 220 transitions. [2021-11-25 18:46:31,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:31,078 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 220 transitions. [2021-11-25 18:46:31,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 18:46:31,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:31,081 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:31,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:46:31,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 18:46:31,295 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:31,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:31,295 INFO L85 PathProgramCache]: Analyzing trace with hash 734707780, now seen corresponding path program 1 times [2021-11-25 18:46:31,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:31,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457824343] [2021-11-25 18:46:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:31,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:46:31,373 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:31,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457824343] [2021-11-25 18:46:31,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457824343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:31,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:31,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:46:31,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919302441] [2021-11-25 18:46:31,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:31,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:46:31,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:31,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:46:31,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:31,375 INFO L87 Difference]: Start difference. First operand 187 states and 220 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:31,653 INFO L93 Difference]: Finished difference Result 199 states and 229 transitions. [2021-11-25 18:46:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:46:31,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-25 18:46:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:31,655 INFO L225 Difference]: With dead ends: 199 [2021-11-25 18:46:31,655 INFO L226 Difference]: Without dead ends: 199 [2021-11-25 18:46:31,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:46:31,656 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 66 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:31,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 225 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:46:31,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-25 18:46:31,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 188. [2021-11-25 18:46:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 154 states have (on average 1.4415584415584415) internal successors, (222), 187 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 222 transitions. [2021-11-25 18:46:31,662 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 222 transitions. Word has length 25 [2021-11-25 18:46:31,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:31,663 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 222 transitions. [2021-11-25 18:46:31,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:31,663 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 222 transitions. [2021-11-25 18:46:31,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 18:46:31,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:31,664 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:31,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 18:46:31,665 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:31,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:31,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1679543139, now seen corresponding path program 1 times [2021-11-25 18:46:31,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:31,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531504520] [2021-11-25 18:46:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:31,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:32,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:32,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:32,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531504520] [2021-11-25 18:46:32,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531504520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:46:32,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564824304] [2021-11-25 18:46:32,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:32,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:46:32,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:46:32,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:46:32,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:46:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:32,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 18:46:32,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:32,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:32,206 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:46:32,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 18:46:32,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:32,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:32,366 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:46:32,366 INFO L388 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 21 treesize of output 25 [2021-11-25 18:46:32,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2021-11-25 18:46:32,399 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:46:32,399 INFO L388 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 22 treesize of output 22 [2021-11-25 18:46:32,459 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:46:32,459 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 18:46:32,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-25 18:46:32,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 18:46:32,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:32,794 INFO L388 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 18:46:32,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:32,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:46:32,823 INFO L388 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 15 treesize of output 7 [2021-11-25 18:46:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:32,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:46:32,988 INFO L388 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 77 treesize of output 57 [2021-11-25 18:46:33,400 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:33,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 67 treesize of output 60 [2021-11-25 18:46:33,409 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:33,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 60 treesize of output 60 [2021-11-25 18:46:33,421 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:33,422 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 74 [2021-11-25 18:46:33,433 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:46:33,434 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 95 [2021-11-25 18:46:33,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 64 treesize of output 62 [2021-11-25 18:46:33,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 62 treesize of output 60 [2021-11-25 18:46:33,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 60 treesize of output 58 [2021-11-25 18:46:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:34,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564824304] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:46:34,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1190499524] [2021-11-25 18:46:34,067 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-25 18:46:34,068 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:46:34,069 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:46:34,069 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:46:34,069 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:46:34,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:46:34,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:34,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:34,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-25 18:46:34,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 18:46:34,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 18:46:34,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 18:46:34,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-25 18:46:34,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 18:46:34,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 18:46:34,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:46:34,277 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:46:34,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2021-11-25 18:46:34,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:46:34,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:34,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-25 18:46:34,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-25 18:46:34,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-25 18:46:34,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2021-11-25 18:46:34,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2021-11-25 18:46:34,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:34,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:34,527 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-25 18:46:34,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 199 treesize of output 120 [2021-11-25 18:46:34,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2021-11-25 18:46:34,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 18:46:34,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:34,645 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 18:46:34,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 463 treesize of output 364 [2021-11-25 18:46:34,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:34,667 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-25 18:46:34,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 463 treesize of output 437 [2021-11-25 18:46:34,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:34,719 INFO L354 Elim1Store]: treesize reduction 78, result has 27.1 percent of original size [2021-11-25 18:46:34,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 457 treesize of output 459 [2021-11-25 18:46:34,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:34,965 INFO L354 Elim1Store]: treesize reduction 278, result has 12.0 percent of original size [2021-11-25 18:46:34,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 465 treesize of output 472 [2021-11-25 18:46:35,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:35,222 INFO L354 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2021-11-25 18:46:35,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 559 treesize of output 440 [2021-11-25 18:46:35,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:35,304 INFO L354 Elim1Store]: treesize reduction 100, result has 16.0 percent of original size [2021-11-25 18:46:35,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 495 treesize of output 477 [2021-11-25 18:46:35,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:35,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:35,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:35,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:35,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:35,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:35,431 INFO L354 Elim1Store]: treesize reduction 176, result has 16.6 percent of original size [2021-11-25 18:46:35,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 500 treesize of output 486 [2021-11-25 18:46:35,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:35,779 INFO L354 Elim1Store]: treesize reduction 100, result has 20.6 percent of original size [2021-11-25 18:46:35,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 856 treesize of output 506 [2021-11-25 18:46:35,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:35,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:35,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:35,890 INFO L354 Elim1Store]: treesize reduction 350, result has 14.6 percent of original size [2021-11-25 18:46:35,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 740 treesize of output 718 [2021-11-25 18:46:35,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:46:35,950 INFO L354 Elim1Store]: treesize reduction 152, result has 23.2 percent of original size [2021-11-25 18:46:35,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 771 treesize of output 719 [2021-11-25 18:46:36,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:46:36,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:36,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:36,244 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:36,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:36,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 18:46:36,268 INFO L388 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 [2021-11-25 18:46:36,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:36,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:46:36,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:36,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:36,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-25 18:46:36,324 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:46:36,325 INFO L388 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 60 treesize of output 39 [2021-11-25 18:46:36,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:36,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:46:36,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:36,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:46:36,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:46:36,640 INFO L354 Elim1Store]: treesize reduction 68, result has 41.9 percent of original size [2021-11-25 18:46:36,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 167 treesize of output 204 [2021-11-25 18:46:37,017 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:37,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:37,051 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:37,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:37,078 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:46:37,116 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-11-25 18:46:37,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2021-11-25 18:46:37,169 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-11-25 18:46:37,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2021-11-25 18:46:37,218 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:37,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:37,307 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:37,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:37,333 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-11-25 18:46:37,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2021-11-25 18:46:37,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:46:37,393 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-11-25 18:46:37,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2021-11-25 18:46:37,479 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:46:37,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:46:37,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:37,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:37,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:37,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:46:37,783 INFO L354 Elim1Store]: treesize reduction 80, result has 38.5 percent of original size [2021-11-25 18:46:37,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 1013 treesize of output 942 [2021-11-25 18:46:37,847 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:46:37,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 925 treesize of output 912 [2021-11-25 18:46:37,913 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:46:37,914 INFO L388 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 1025 treesize of output 1012 [2021-11-25 18:46:43,145 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:46:43,145 INFO L388 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 19 treesize of output 26 [2021-11-25 18:46:43,166 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:46:43,167 INFO L388 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 19 treesize of output 26 [2021-11-25 18:46:43,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:46:43,216 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:46:45,724 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7048#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 1)) (not (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 4)) 0)) (<= (+ |ULTIMATE.start_main_~head~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~head~0#1.base|)) (= |ULTIMATE.start_main_~marked~0#1| 0) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0))) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (<= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 8) (select |#length| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|))) (= (select |#valid| |ULTIMATE.start_main_~head~0#1.base|) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) 1) (= |#NULL.base| 0))' at error location [2021-11-25 18:46:45,724 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:46:45,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:46:45,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 30 [2021-11-25 18:46:45,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23358790] [2021-11-25 18:46:45,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:46:45,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-25 18:46:45,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:45,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-25 18:46:45,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2391, Unknown=4, NotChecked=0, Total=2652 [2021-11-25 18:46:45,727 INFO L87 Difference]: Start difference. First operand 188 states and 222 transitions. Second operand has 31 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 30 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:46,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:46,352 INFO L93 Difference]: Finished difference Result 200 states and 234 transitions. [2021-11-25 18:46:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:46:46,353 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 30 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-25 18:46:46,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:46,354 INFO L225 Difference]: With dead ends: 200 [2021-11-25 18:46:46,354 INFO L226 Difference]: Without dead ends: 200 [2021-11-25 18:46:46,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=336, Invalid=3082, Unknown=4, NotChecked=0, Total=3422 [2021-11-25 18:46:46,356 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 57 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 381 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:46,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 957 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 558 Invalid, 0 Unknown, 381 Unchecked, 0.4s Time] [2021-11-25 18:46:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-25 18:46:46,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 189. [2021-11-25 18:46:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 155 states have (on average 1.4387096774193548) internal successors, (223), 188 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 223 transitions. [2021-11-25 18:46:46,362 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 223 transitions. Word has length 27 [2021-11-25 18:46:46,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:46,362 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 223 transitions. [2021-11-25 18:46:46,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 30 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:46,363 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 223 transitions. [2021-11-25 18:46:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 18:46:46,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:46,363 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:46,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:46:46,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 18:46:46,583 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:46,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:46,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1130212235, now seen corresponding path program 2 times [2021-11-25 18:46:46,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:46,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461900490] [2021-11-25 18:46:46,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:46,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:46,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:46,827 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:46,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461900490] [2021-11-25 18:46:46,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461900490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:46:46,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767764201] [2021-11-25 18:46:46,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:46:46,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:46:46,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:46:46,834 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:46:46,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:46:46,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 18:46:46,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:46:46,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-25 18:46:46,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:46,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:47,026 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:46:47,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 18:46:47,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:46:47,113 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:46:47,113 INFO L388 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 22 treesize of output 22 [2021-11-25 18:46:47,138 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:46:47,138 INFO L388 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 22 treesize of output 22 [2021-11-25 18:46:47,162 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:46:47,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 18:46:47,197 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:46:47,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-11-25 18:46:47,284 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-25 18:46:47,285 INFO L388 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 47 treesize of output 49 [2021-11-25 18:46:47,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 8 [2021-11-25 18:46:47,370 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-25 18:46:47,370 INFO L388 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 56 treesize of output 56 [2021-11-25 18:46:47,373 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-25 18:46:47,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1336948959] [2021-11-25 18:46:47,375 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-25 18:46:47,375 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:46:47,376 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:46:47,376 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:46:47,376 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:46:47,387 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3287b5ec at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:401) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:154) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:90) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 18:46:47,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:46:47,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-25 18:46:47,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871448567] [2021-11-25 18:46:47,391 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 18:46:47,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 18:46:47,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:47,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 18:46:47,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-11-25 18:46:47,393 INFO L87 Difference]: Start difference. First operand 189 states and 223 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:47,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:46:47,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-11-25 18:46:47,394 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:47,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:46:47,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-25 18:46:47,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 18:46:47,607 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3287b5ec at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 18:46:47,611 INFO L158 Benchmark]: Toolchain (without parser) took 50570.96ms. Allocated memory was 90.2MB in the beginning and 406.8MB in the end (delta: 316.7MB). Free memory was 53.6MB in the beginning and 159.9MB in the end (delta: -106.4MB). Peak memory consumption was 210.6MB. Max. memory is 16.1GB. [2021-11-25 18:46:47,611 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory was 59.9MB in the beginning and 59.9MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:46:47,611 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.69ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.6MB in the beginning and 75.3MB in the end (delta: -21.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 18:46:47,611 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.29ms. Allocated memory is still 109.1MB. Free memory was 75.3MB in the beginning and 72.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:46:47,612 INFO L158 Benchmark]: Boogie Preprocessor took 79.11ms. Allocated memory is still 109.1MB. Free memory was 72.8MB in the beginning and 71.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:46:47,612 INFO L158 Benchmark]: RCFGBuilder took 810.48ms. Allocated memory is still 109.1MB. Free memory was 71.2MB in the beginning and 45.1MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-25 18:46:47,612 INFO L158 Benchmark]: TraceAbstraction took 48957.04ms. Allocated memory was 109.1MB in the beginning and 406.8MB in the end (delta: 297.8MB). Free memory was 44.4MB in the beginning and 159.9MB in the end (delta: -115.5MB). Peak memory consumption was 183.9MB. Max. memory is 16.1GB. [2021-11-25 18:46:47,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory was 59.9MB in the beginning and 59.9MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 629.69ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.6MB in the beginning and 75.3MB in the end (delta: -21.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.29ms. Allocated memory is still 109.1MB. Free memory was 75.3MB in the beginning and 72.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.11ms. Allocated memory is still 109.1MB. Free memory was 72.8MB in the beginning and 71.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 810.48ms. Allocated memory is still 109.1MB. Free memory was 71.2MB in the beginning and 45.1MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 48957.04ms. Allocated memory was 109.1MB in the beginning and 406.8MB in the end (delta: 297.8MB). Free memory was 44.4MB in the beginning and 159.9MB in the end (delta: -115.5MB). Peak memory consumption was 183.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3287b5ec de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3287b5ec: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-25 18:46:47,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:46:50,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:46:50,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:46:50,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:46:50,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:46:50,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:46:50,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:46:50,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:46:50,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:46:50,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:46:50,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:46:50,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:46:50,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:46:50,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:46:50,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:46:50,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:46:50,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:46:50,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:46:50,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:46:50,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:46:50,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:46:50,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:46:50,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:46:50,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:46:50,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:46:50,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:46:50,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:46:50,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:46:50,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:46:50,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:46:50,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:46:50,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:46:50,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:46:50,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:46:50,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:46:50,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:46:50,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:46:50,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:46:50,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:46:50,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:46:50,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:46:50,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 18:46:50,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:46:50,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:46:50,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:46:50,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:46:50,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:46:50,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:46:50,193 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:46:50,194 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:46:50,194 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:46:50,194 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:46:50,195 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:46:50,195 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:46:50,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 18:46:50,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 18:46:50,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:46:50,198 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:46:50,198 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:46:50,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:46:50,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:46:50,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:46:50,199 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 18:46:50,199 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 18:46:50,199 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 18:46:50,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:46:50,200 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:46:50,200 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:46:50,201 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:46:50,201 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:46:50,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:46:50,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:46:50,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:46:50,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:46:50,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:46:50,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:46:50,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:46:50,203 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:46:50,204 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:46:50,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:46:50,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:46:50,204 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f [2021-11-25 18:46:50,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:46:50,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:46:50,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:46:50,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:46:50,611 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:46:50,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/forester-heap/sll-sorted-2.i [2021-11-25 18:46:50,682 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/data/927c996be/62f3cc90138d454da455cdddf619187d/FLAG1b68688d3 [2021-11-25 18:46:51,315 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:46:51,318 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i [2021-11-25 18:46:51,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/data/927c996be/62f3cc90138d454da455cdddf619187d/FLAG1b68688d3 [2021-11-25 18:46:51,589 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/data/927c996be/62f3cc90138d454da455cdddf619187d [2021-11-25 18:46:51,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:46:51,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:46:51,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:46:51,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:46:51,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:46:51,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:46:51" (1/1) ... [2021-11-25 18:46:51,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5cb4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:51, skipping insertion in model container [2021-11-25 18:46:51,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:46:51" (1/1) ... [2021-11-25 18:46:51,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:46:51,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:46:52,068 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2021-11-25 18:46:52,074 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2021-11-25 18:46:52,091 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2021-11-25 18:46:52,102 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2021-11-25 18:46:52,106 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2021-11-25 18:46:52,115 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2021-11-25 18:46:52,123 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2021-11-25 18:46:52,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:46:52,149 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:46:52,205 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2021-11-25 18:46:52,207 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2021-11-25 18:46:52,215 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2021-11-25 18:46:52,221 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2021-11-25 18:46:52,222 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2021-11-25 18:46:52,224 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2021-11-25 18:46:52,227 WARN L230 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_59ddd7da-de4d-4672-942c-c2dc6b3181c3/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2021-11-25 18:46:52,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:46:52,280 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:46:52,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52 WrapperNode [2021-11-25 18:46:52,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:46:52,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:46:52,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:46:52,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:46:52,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52" (1/1) ... [2021-11-25 18:46:52,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52" (1/1) ... [2021-11-25 18:46:52,375 INFO L137 Inliner]: procedures = 122, calls = 40, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 192 [2021-11-25 18:46:52,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:46:52,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:46:52,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:46:52,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:46:52,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52" (1/1) ... [2021-11-25 18:46:52,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52" (1/1) ... [2021-11-25 18:46:52,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52" (1/1) ... [2021-11-25 18:46:52,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52" (1/1) ... [2021-11-25 18:46:52,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52" (1/1) ... [2021-11-25 18:46:52,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52" (1/1) ... [2021-11-25 18:46:52,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52" (1/1) ... [2021-11-25 18:46:52,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:46:52,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:46:52,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:46:52,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:46:52,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52" (1/1) ... [2021-11-25 18:46:52,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:46:52,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:46:52,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:46:52,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:46:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 18:46:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:46:52,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:46:52,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:46:52,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:46:52,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:46:52,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 18:46:52,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:46:52,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:46:52,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:46:52,703 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:46:52,712 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:46:53,371 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:46:53,378 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:46:53,379 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-25 18:46:53,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:46:53 BoogieIcfgContainer [2021-11-25 18:46:53,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:46:53,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:46:53,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:46:53,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:46:53,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:46:51" (1/3) ... [2021-11-25 18:46:53,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df2afa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:46:53, skipping insertion in model container [2021-11-25 18:46:53,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:46:52" (2/3) ... [2021-11-25 18:46:53,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df2afa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:46:53, skipping insertion in model container [2021-11-25 18:46:53,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:46:53" (3/3) ... [2021-11-25 18:46:53,389 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2021-11-25 18:46:53,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:46:53,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-11-25 18:46:53,438 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:46:53,444 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:46:53,445 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-11-25 18:46:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 90 states have (on average 2.2111111111111112) internal successors, (199), 161 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:53,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 18:46:53,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:53,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 18:46:53,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:53,473 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-25 18:46:53,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:46:53,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122666569] [2021-11-25 18:46:53,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:53,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:46:53,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:46:53,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:46:53,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:46:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:53,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:46:53,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:53,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:53,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:46:53,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:46:53,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122666569] [2021-11-25 18:46:53,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122666569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:53,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:53,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:46:53,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994750148] [2021-11-25 18:46:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:53,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:46:53,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:46:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:46:53,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:53,712 INFO L87 Difference]: Start difference. First operand has 162 states, 90 states have (on average 2.2111111111111112) internal successors, (199), 161 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:53,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:53,981 INFO L93 Difference]: Finished difference Result 166 states and 176 transitions. [2021-11-25 18:46:53,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:46:53,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-25 18:46:53,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:53,993 INFO L225 Difference]: With dead ends: 166 [2021-11-25 18:46:53,994 INFO L226 Difference]: Without dead ends: 162 [2021-11-25 18:46:53,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:53,999 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 155 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:54,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 111 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:46:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-25 18:46:54,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2021-11-25 18:46:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 89 states have (on average 1.8876404494382022) internal successors, (168), 157 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2021-11-25 18:46:54,043 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 3 [2021-11-25 18:46:54,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:54,043 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2021-11-25 18:46:54,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2021-11-25 18:46:54,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 18:46:54,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:54,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 18:46:54,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:46:54,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:46:54,255 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:54,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:54,256 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-25 18:46:54,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:46:54,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72716137] [2021-11-25 18:46:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:54,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:46:54,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:46:54,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:46:54,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:46:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:54,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:46:54,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:54,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:54,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:46:54,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:46:54,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72716137] [2021-11-25 18:46:54,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72716137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:54,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:54,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:46:54,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004859802] [2021-11-25 18:46:54,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:54,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:46:54,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:46:54,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:46:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:54,350 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:54,691 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2021-11-25 18:46:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:46:54,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-25 18:46:54,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:54,694 INFO L225 Difference]: With dead ends: 160 [2021-11-25 18:46:54,694 INFO L226 Difference]: Without dead ends: 160 [2021-11-25 18:46:54,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:54,696 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 151 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:54,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 109 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:46:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-25 18:46:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2021-11-25 18:46:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 89 states have (on average 1.8651685393258426) internal successors, (166), 155 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2021-11-25 18:46:54,726 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 3 [2021-11-25 18:46:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:54,726 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2021-11-25 18:46:54,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2021-11-25 18:46:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:46:54,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:54,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:54,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:46:54,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:46:54,943 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:54,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1803027173, now seen corresponding path program 1 times [2021-11-25 18:46:54,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:46:54,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787828689] [2021-11-25 18:46:54,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:54,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:46:54,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:46:54,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:46:54,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 18:46:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:55,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:46:55,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:55,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:55,123 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 18:46:55,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 22 [2021-11-25 18:46:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:55,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:46:55,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:46:55,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787828689] [2021-11-25 18:46:55,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787828689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:55,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:55,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:46:55,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832881525] [2021-11-25 18:46:55,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:55,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:46:55,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:46:55,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:46:55,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:46:55,156 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:55,600 INFO L93 Difference]: Finished difference Result 164 states and 177 transitions. [2021-11-25 18:46:55,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:46:55,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 18:46:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:55,603 INFO L225 Difference]: With dead ends: 164 [2021-11-25 18:46:55,603 INFO L226 Difference]: Without dead ends: 164 [2021-11-25 18:46:55,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:55,605 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 267 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:55,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 83 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:46:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-25 18:46:55,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 153. [2021-11-25 18:46:55,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 103 states have (on average 1.6893203883495145) internal successors, (174), 152 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2021-11-25 18:46:55,616 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 7 [2021-11-25 18:46:55,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:55,617 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2021-11-25 18:46:55,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:55,617 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2021-11-25 18:46:55,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:46:55,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:55,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:55,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:46:55,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:46:55,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:55,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:55,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1803027174, now seen corresponding path program 1 times [2021-11-25 18:46:55,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:46:55,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630242185] [2021-11-25 18:46:55,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:55,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:46:55,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:46:55,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:46:55,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 18:46:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:55,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:46:55,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:55,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:56,006 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:46:56,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-25 18:46:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:56,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:46:56,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:46:56,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630242185] [2021-11-25 18:46:56,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630242185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:56,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:56,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:46:56,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595646197] [2021-11-25 18:46:56,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:56,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:46:56,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:46:56,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:46:56,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:46:56,025 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:56,625 INFO L93 Difference]: Finished difference Result 233 states and 255 transitions. [2021-11-25 18:46:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:46:56,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 18:46:56,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:56,627 INFO L225 Difference]: With dead ends: 233 [2021-11-25 18:46:56,628 INFO L226 Difference]: Without dead ends: 233 [2021-11-25 18:46:56,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:56,629 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 303 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:56,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 136 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:46:56,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-25 18:46:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 199. [2021-11-25 18:46:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 149 states have (on average 1.5838926174496644) internal successors, (236), 198 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 236 transitions. [2021-11-25 18:46:56,643 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 236 transitions. Word has length 7 [2021-11-25 18:46:56,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:56,643 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 236 transitions. [2021-11-25 18:46:56,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:56,644 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 236 transitions. [2021-11-25 18:46:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:46:56,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:56,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:56,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-25 18:46:56,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:46:56,858 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:56,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1837264999, now seen corresponding path program 1 times [2021-11-25 18:46:56,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:46:56,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149712686] [2021-11-25 18:46:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:56,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:46:56,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:46:56,860 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:46:56,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 18:46:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:56,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:46:56,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:56,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:46:56,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:46:56,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149712686] [2021-11-25 18:46:56,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149712686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:56,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:56,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:46:56,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773877766] [2021-11-25 18:46:56,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:56,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:46:56,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:46:56,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:46:56,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:56,938 INFO L87 Difference]: Start difference. First operand 199 states and 236 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:56,964 INFO L93 Difference]: Finished difference Result 237 states and 277 transitions. [2021-11-25 18:46:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:46:56,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-25 18:46:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:56,967 INFO L225 Difference]: With dead ends: 237 [2021-11-25 18:46:56,968 INFO L226 Difference]: Without dead ends: 237 [2021-11-25 18:46:56,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:56,972 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 107 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:56,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 210 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:46:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-25 18:46:56,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 207. [2021-11-25 18:46:56,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 157 states have (on average 1.5796178343949046) internal successors, (248), 206 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 248 transitions. [2021-11-25 18:46:56,998 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 248 transitions. Word has length 9 [2021-11-25 18:46:56,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:56,998 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 248 transitions. [2021-11-25 18:46:56,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 248 transitions. [2021-11-25 18:46:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:46:56,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:56,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:57,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:46:57,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:46:57,210 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:57,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:57,211 INFO L85 PathProgramCache]: Analyzing trace with hash 406735527, now seen corresponding path program 1 times [2021-11-25 18:46:57,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:46:57,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010208418] [2021-11-25 18:46:57,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:57,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:46:57,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:46:57,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:46:57,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 18:46:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:57,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:46:57,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:57,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:57,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:57,357 INFO L388 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 20 treesize of output 12 [2021-11-25 18:46:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:57,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:46:57,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:46:57,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010208418] [2021-11-25 18:46:57,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010208418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:57,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:57,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:46:57,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493950585] [2021-11-25 18:46:57,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:57,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:46:57,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:46:57,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:46:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:46:57,380 INFO L87 Difference]: Start difference. First operand 207 states and 248 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:58,051 INFO L93 Difference]: Finished difference Result 213 states and 253 transitions. [2021-11-25 18:46:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:46:58,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 18:46:58,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:58,053 INFO L225 Difference]: With dead ends: 213 [2021-11-25 18:46:58,054 INFO L226 Difference]: Without dead ends: 213 [2021-11-25 18:46:58,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:46:58,055 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 101 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:58,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 347 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:46:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-25 18:46:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 206. [2021-11-25 18:46:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 157 states have (on average 1.5668789808917198) internal successors, (246), 205 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 246 transitions. [2021-11-25 18:46:58,062 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 246 transitions. Word has length 11 [2021-11-25 18:46:58,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:58,062 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 246 transitions. [2021-11-25 18:46:58,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:58,063 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 246 transitions. [2021-11-25 18:46:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:46:58,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:58,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:58,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:46:58,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:46:58,264 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:58,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:58,264 INFO L85 PathProgramCache]: Analyzing trace with hash 406735528, now seen corresponding path program 1 times [2021-11-25 18:46:58,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:46:58,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598556649] [2021-11-25 18:46:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:58,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:46:58,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:46:58,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:46:58,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 18:46:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:58,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 18:46:58,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:58,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:46:58,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:58,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:46:58,450 INFO L388 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 17 treesize of output 9 [2021-11-25 18:46:58,455 INFO L388 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 15 treesize of output 7 [2021-11-25 18:46:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:46:58,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:46:58,501 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:46:58,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598556649] [2021-11-25 18:46:58,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598556649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:58,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:58,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:46:58,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987980341] [2021-11-25 18:46:58,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:58,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:46:58,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:46:58,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:46:58,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:46:58,503 INFO L87 Difference]: Start difference. First operand 206 states and 246 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:59,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:59,272 INFO L93 Difference]: Finished difference Result 202 states and 239 transitions. [2021-11-25 18:46:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:46:59,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 18:46:59,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:59,274 INFO L225 Difference]: With dead ends: 202 [2021-11-25 18:46:59,274 INFO L226 Difference]: Without dead ends: 202 [2021-11-25 18:46:59,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:46:59,275 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 13 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:59,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 428 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:46:59,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-25 18:46:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2021-11-25 18:46:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 153 states have (on average 1.5294117647058822) internal successors, (234), 196 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 234 transitions. [2021-11-25 18:46:59,280 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 234 transitions. Word has length 11 [2021-11-25 18:46:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:59,281 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 234 transitions. [2021-11-25 18:46:59,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 234 transitions. [2021-11-25 18:46:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 18:46:59,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:59,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:59,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:46:59,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:46:59,482 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:46:59,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:59,483 INFO L85 PathProgramCache]: Analyzing trace with hash 415940479, now seen corresponding path program 1 times [2021-11-25 18:46:59,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:46:59,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705843782] [2021-11-25 18:46:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:59,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:46:59,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:46:59,484 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:46:59,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 18:46:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:59,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:46:59,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:46:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:46:59,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:46:59,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:46:59,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705843782] [2021-11-25 18:46:59,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705843782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:59,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:59,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:46:59,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566452529] [2021-11-25 18:46:59,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:59,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:46:59,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:46:59,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:46:59,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:46:59,639 INFO L87 Difference]: Start difference. First operand 197 states and 234 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:59,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:59,942 INFO L93 Difference]: Finished difference Result 228 states and 249 transitions. [2021-11-25 18:46:59,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:46:59,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-25 18:46:59,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:59,943 INFO L225 Difference]: With dead ends: 228 [2021-11-25 18:46:59,943 INFO L226 Difference]: Without dead ends: 228 [2021-11-25 18:46:59,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:59,945 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 273 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:59,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 186 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:46:59,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-25 18:46:59,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 195. [2021-11-25 18:46:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 152 states have (on average 1.513157894736842) internal successors, (230), 194 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:59,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 230 transitions. [2021-11-25 18:46:59,951 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 230 transitions. Word has length 18 [2021-11-25 18:46:59,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:59,951 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 230 transitions. [2021-11-25 18:46:59,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:46:59,952 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 230 transitions. [2021-11-25 18:46:59,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 18:46:59,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:59,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:59,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:47:00,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:47:00,159 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:47:00,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:00,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1799357454, now seen corresponding path program 1 times [2021-11-25 18:47:00,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:47:00,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123954757] [2021-11-25 18:47:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:00,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:47:00,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:47:00,162 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:47:00,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 18:47:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:00,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 18:47:00,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:47:00,324 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 18:47:00,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 21 [2021-11-25 18:47:00,501 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-25 18:47:00,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 51 [2021-11-25 18:47:00,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:47:01,173 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:47:01,174 INFO L388 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 55 treesize of output 51 [2021-11-25 18:47:01,483 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:47:01,484 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 48 [2021-11-25 18:47:02,226 INFO L388 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 46 treesize of output 30 [2021-11-25 18:47:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:02,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:47:03,142 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:47:03,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 31 treesize of output 32 [2021-11-25 18:47:03,156 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:47:03,157 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 59 [2021-11-25 18:47:03,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 20 [2021-11-25 18:47:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:16,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:47:16,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123954757] [2021-11-25 18:47:16,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123954757] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:47:16,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1388663367] [2021-11-25 18:47:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:16,322 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:47:16,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:47:16,340 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:47:16,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-25 18:47:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:16,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 18:47:16,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:47:16,625 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 18:47:16,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 15 treesize of output 20 [2021-11-25 18:47:16,840 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-25 18:47:16,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 50 [2021-11-25 18:47:17,036 INFO L388 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 [2021-11-25 18:47:17,585 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:47:17,585 INFO L388 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 51 treesize of output 47 [2021-11-25 18:47:17,824 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:47:17,824 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 18:47:18,465 INFO L388 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 46 treesize of output 30 [2021-11-25 18:47:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:18,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:47:18,872 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:47:18,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 31 treesize of output 32 [2021-11-25 18:47:18,883 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:47:18,884 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 59 [2021-11-25 18:47:18,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 20 [2021-11-25 18:47:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:34,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1388663367] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:47:34,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447676876] [2021-11-25 18:47:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:34,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:47:34,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:47:34,994 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:47:34,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 18:47:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:35,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-25 18:47:35,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:47:35,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:47:37,250 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 18:47:37,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-25 18:47:37,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:47:37,653 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:47:37,653 INFO L388 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 33 [2021-11-25 18:47:37,746 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:47:37,747 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2021-11-25 18:47:37,950 INFO L388 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 28 treesize of output 16 [2021-11-25 18:47:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:37,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:47:38,199 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_262) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))))))) (_ bv1 1)))) is different from false [2021-11-25 18:47:38,219 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_262) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))))))))))) is different from false [2021-11-25 18:47:38,230 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_262) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))))))))) (_ bv1 1)))) is different from false [2021-11-25 18:47:38,240 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_262) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))))))))))))) is different from false [2021-11-25 18:47:38,254 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:47:38,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 36 [2021-11-25 18:47:38,270 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:47:38,270 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 67 [2021-11-25 18:47:38,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 24 [2021-11-25 18:48:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:01,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447676876] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:48:01,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:48:01,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 11] total 44 [2021-11-25 18:48:01,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544769074] [2021-11-25 18:48:01,858 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:48:01,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-25 18:48:01,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:48:01,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-25 18:48:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1375, Unknown=35, NotChecked=324, Total=1980 [2021-11-25 18:48:01,861 INFO L87 Difference]: Start difference. First operand 195 states and 230 transitions. Second operand has 45 states, 44 states have (on average 2.409090909090909) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:03,191 INFO L93 Difference]: Finished difference Result 219 states and 260 transitions. [2021-11-25 18:48:03,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 18:48:03,192 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.409090909090909) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-25 18:48:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:03,193 INFO L225 Difference]: With dead ends: 219 [2021-11-25 18:48:03,193 INFO L226 Difference]: Without dead ends: 219 [2021-11-25 18:48:03,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 68 SyntacticMatches, 33 SemanticMatches, 53 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 55.6s TimeCoverageRelationStatistics Valid=368, Invalid=2162, Unknown=36, NotChecked=404, Total=2970 [2021-11-25 18:48:03,195 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 50 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 843 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:03,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1479 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 843 Unchecked, 0.5s Time] [2021-11-25 18:48:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-25 18:48:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 214. [2021-11-25 18:48:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 171 states have (on average 1.4853801169590644) internal successors, (254), 213 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2021-11-25 18:48:03,205 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 254 transitions. Word has length 24 [2021-11-25 18:48:03,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:03,206 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-11-25 18:48:03,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.409090909090909) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 254 transitions. [2021-11-25 18:48:03,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 18:48:03,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:03,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:03,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:03,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:03,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:03,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 18:48:03,831 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:48:03,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:03,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1799357455, now seen corresponding path program 1 times [2021-11-25 18:48:03,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:48:03,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547779494] [2021-11-25 18:48:03,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:03,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:48:03,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:48:03,833 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:48:03,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 18:48:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:03,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-25 18:48:03,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:03,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:04,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:04,067 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:48:04,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 18:48:04,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:48:04,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:48:04,277 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:04,278 INFO L388 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 31 treesize of output 29 [2021-11-25 18:48:04,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:48:04,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 18:48:04,348 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:04,349 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 18:48:04,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 18:48:04,513 INFO L388 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 25 treesize of output 13 [2021-11-25 18:48:04,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:48:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:04,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:48:04,872 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_306 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_305) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_306) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_305 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_305) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32)))))) is different from false [2021-11-25 18:48:04,960 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_306 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_305) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_306) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_305 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_305) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2021-11-25 18:48:05,000 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_305 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_305) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_306 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_305) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_306) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) is different from false [2021-11-25 18:48:05,033 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:05,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 37 treesize of output 30 [2021-11-25 18:48:05,059 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:05,059 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-11-25 18:48:05,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 15 treesize of output 11 [2021-11-25 18:48:05,130 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:05,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 37 treesize of output 38 [2021-11-25 18:48:05,142 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:05,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-11-25 18:48:05,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:48:05,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-25 18:48:05,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:48:05,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-25 18:48:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:05,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:48:05,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547779494] [2021-11-25 18:48:05,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547779494] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:48:05,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1772730050] [2021-11-25 18:48:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:05,339 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:48:05,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:48:05,340 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:48:05,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-25 18:48:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:05,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-25 18:48:05,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:05,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:05,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:05,593 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:48:05,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 18:48:05,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:48:05,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:48:05,723 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:05,724 INFO L388 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 31 treesize of output 29 [2021-11-25 18:48:05,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:48:05,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 18:48:05,807 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:05,808 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 18:48:05,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 18:48:05,940 INFO L388 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 25 treesize of output 13 [2021-11-25 18:48:05,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:48:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:05,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:48:06,108 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_349 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_349) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_350 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_349 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_349) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_350) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-25 18:48:06,196 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_350 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_349 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_349) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_350) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_349 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_349) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2021-11-25 18:48:06,228 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_349 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_349) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_350 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_349 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_349) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_350) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) is different from false [2021-11-25 18:48:06,256 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:06,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 37 treesize of output 38 [2021-11-25 18:48:06,267 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:06,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 29 treesize of output 30 [2021-11-25 18:48:06,288 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:06,288 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2021-11-25 18:48:06,314 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:06,314 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 81 [2021-11-25 18:48:06,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 66 treesize of output 62 [2021-11-25 18:48:06,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 32 treesize of output 28 [2021-11-25 18:48:07,104 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:07,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 37 treesize of output 30 [2021-11-25 18:48:07,125 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:07,126 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-11-25 18:48:07,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 15 treesize of output 11 [2021-11-25 18:48:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:07,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1772730050] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:48:07,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680287387] [2021-11-25 18:48:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:07,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:48:07,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:48:07,439 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:48:07,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 18:48:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:07,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 18:48:07,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:07,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:07,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:07,671 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:48:07,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 18:48:07,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:48:07,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:48:07,985 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:48:07,985 INFO L388 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 14 treesize of output 20 [2021-11-25 18:48:07,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-11-25 18:48:08,009 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:08,009 INFO L388 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 31 treesize of output 29 [2021-11-25 18:48:08,104 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:08,105 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 18:48:08,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 18:48:08,330 INFO L388 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 25 treesize of output 13 [2021-11-25 18:48:08,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:48:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:08,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:48:08,492 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_393 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_393) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_393 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_393) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-25 18:48:08,574 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_393 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_393) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_393 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_393) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-25 18:48:08,603 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_393 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_393) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_393 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_393) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_394) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) is different from false [2021-11-25 18:48:08,627 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:08,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 37 treesize of output 30 [2021-11-25 18:48:08,640 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:08,640 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-11-25 18:48:08,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 15 treesize of output 11 [2021-11-25 18:48:08,719 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:08,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 37 treesize of output 38 [2021-11-25 18:48:08,738 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:08,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-11-25 18:48:08,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:48:08,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-25 18:48:08,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:48:08,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-25 18:48:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:08,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680287387] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:48:08,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:48:08,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 32 [2021-11-25 18:48:08,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702466486] [2021-11-25 18:48:08,858 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:48:08,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-25 18:48:08,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:48:08,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-25 18:48:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=475, Unknown=9, NotChecked=468, Total=1056 [2021-11-25 18:48:08,860 INFO L87 Difference]: Start difference. First operand 214 states and 254 transitions. Second operand has 33 states, 32 states have (on average 2.5625) internal successors, (82), 33 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:14,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:14,458 INFO L93 Difference]: Finished difference Result 402 states and 461 transitions. [2021-11-25 18:48:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:48:14,459 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.5625) internal successors, (82), 33 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-25 18:48:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:14,461 INFO L225 Difference]: With dead ends: 402 [2021-11-25 18:48:14,461 INFO L226 Difference]: Without dead ends: 402 [2021-11-25 18:48:14,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 102 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 9 IntricatePredicates, 1 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=207, Invalid=750, Unknown=9, NotChecked=594, Total=1560 [2021-11-25 18:48:14,463 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 510 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 3458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2461 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:14,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 1202 Invalid, 3458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 950 Invalid, 0 Unknown, 2461 Unchecked, 2.4s Time] [2021-11-25 18:48:14,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-25 18:48:14,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 214. [2021-11-25 18:48:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 171 states have (on average 1.4795321637426901) internal successors, (253), 213 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 253 transitions. [2021-11-25 18:48:14,471 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 253 transitions. Word has length 24 [2021-11-25 18:48:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:14,471 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 253 transitions. [2021-11-25 18:48:14,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.5625) internal successors, (82), 33 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 253 transitions. [2021-11-25 18:48:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 18:48:14,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:14,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:14,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-25 18:48:14,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-25 18:48:14,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-11-25 18:48:15,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 18:48:15,085 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:48:15,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1680561416, now seen corresponding path program 1 times [2021-11-25 18:48:15,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:48:15,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967115737] [2021-11-25 18:48:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:15,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:48:15,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:48:15,087 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:48:15,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 18:48:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:15,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:48:15,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:48:15,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:48:15,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:48:15,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967115737] [2021-11-25 18:48:15,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967115737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:15,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:15,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:48:15,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308284004] [2021-11-25 18:48:15,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:15,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:48:15,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:48:15,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:48:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:48:15,214 INFO L87 Difference]: Start difference. First operand 214 states and 253 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:15,233 INFO L93 Difference]: Finished difference Result 216 states and 255 transitions. [2021-11-25 18:48:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:48:15,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-25 18:48:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:15,234 INFO L225 Difference]: With dead ends: 216 [2021-11-25 18:48:15,234 INFO L226 Difference]: Without dead ends: 216 [2021-11-25 18:48:15,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:48:15,235 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:15,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 274 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:48:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-25 18:48:15,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-25 18:48:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 173 states have (on average 1.4739884393063585) internal successors, (255), 215 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 255 transitions. [2021-11-25 18:48:15,242 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 255 transitions. Word has length 26 [2021-11-25 18:48:15,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:15,245 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 255 transitions. [2021-11-25 18:48:15,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 255 transitions. [2021-11-25 18:48:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 18:48:15,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:15,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:15,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:15,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:48:15,462 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:48:15,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:15,463 INFO L85 PathProgramCache]: Analyzing trace with hash -558780366, now seen corresponding path program 1 times [2021-11-25 18:48:15,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:48:15,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114181916] [2021-11-25 18:48:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:15,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:48:15,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:48:15,464 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:48:15,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-25 18:48:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:15,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:48:15,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:15,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:48:15,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:48:15,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:48:15,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114181916] [2021-11-25 18:48:15,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114181916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:15,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:15,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:48:15,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560809268] [2021-11-25 18:48:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:15,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:48:15,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:48:15,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:48:15,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:48:15,646 INFO L87 Difference]: Start difference. First operand 216 states and 255 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:15,839 INFO L93 Difference]: Finished difference Result 214 states and 249 transitions. [2021-11-25 18:48:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:48:15,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-25 18:48:15,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:15,840 INFO L225 Difference]: With dead ends: 214 [2021-11-25 18:48:15,840 INFO L226 Difference]: Without dead ends: 214 [2021-11-25 18:48:15,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:48:15,841 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 70 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:15,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 163 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:48:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-25 18:48:15,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2021-11-25 18:48:15,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 173 states have (on average 1.439306358381503) internal successors, (249), 212 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 249 transitions. [2021-11-25 18:48:15,847 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 249 transitions. Word has length 27 [2021-11-25 18:48:15,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:15,847 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 249 transitions. [2021-11-25 18:48:15,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 249 transitions. [2021-11-25 18:48:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 18:48:15,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:15,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:15,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:16,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:48:16,060 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:48:16,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:16,060 INFO L85 PathProgramCache]: Analyzing trace with hash -558780365, now seen corresponding path program 1 times [2021-11-25 18:48:16,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:48:16,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679121577] [2021-11-25 18:48:16,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:16,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:48:16,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:48:16,062 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:48:16,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-25 18:48:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:16,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:48:16,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:16,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:48:16,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:48:16,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:48:16,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679121577] [2021-11-25 18:48:16,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679121577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:16,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:16,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:48:16,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309587403] [2021-11-25 18:48:16,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:16,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:48:16,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:48:16,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:48:16,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:48:16,223 INFO L87 Difference]: Start difference. First operand 213 states and 249 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:16,492 INFO L93 Difference]: Finished difference Result 210 states and 243 transitions. [2021-11-25 18:48:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:48:16,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-25 18:48:16,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:16,495 INFO L225 Difference]: With dead ends: 210 [2021-11-25 18:48:16,495 INFO L226 Difference]: Without dead ends: 210 [2021-11-25 18:48:16,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:48:16,496 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 75 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:16,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 141 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:48:16,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-25 18:48:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-11-25 18:48:16,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 173 states have (on average 1.4046242774566473) internal successors, (243), 209 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:16,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 243 transitions. [2021-11-25 18:48:16,501 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 243 transitions. Word has length 27 [2021-11-25 18:48:16,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:16,502 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 243 transitions. [2021-11-25 18:48:16,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 243 transitions. [2021-11-25 18:48:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 18:48:16,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:16,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:16,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:16,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:48:16,708 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:48:16,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash -142290181, now seen corresponding path program 1 times [2021-11-25 18:48:16,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:48:16,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837587326] [2021-11-25 18:48:16,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:16,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:48:16,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:48:16,710 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:48:16,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 18:48:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:16,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:48:16,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:16,940 INFO L388 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 15 treesize of output 7 [2021-11-25 18:48:16,943 INFO L388 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 15 treesize of output 7 [2021-11-25 18:48:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:48:16,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:48:16,965 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:48:16,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837587326] [2021-11-25 18:48:16,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837587326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:16,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:16,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:48:16,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314421170] [2021-11-25 18:48:16,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:16,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:48:16,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:48:16,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:48:16,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:48:16,967 INFO L87 Difference]: Start difference. First operand 210 states and 243 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:17,546 INFO L93 Difference]: Finished difference Result 219 states and 252 transitions. [2021-11-25 18:48:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:48:17,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-25 18:48:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:17,548 INFO L225 Difference]: With dead ends: 219 [2021-11-25 18:48:17,548 INFO L226 Difference]: Without dead ends: 219 [2021-11-25 18:48:17,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:48:17,549 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 25 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:17,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 414 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:48:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-25 18:48:17,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 214. [2021-11-25 18:48:17,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 177 states have (on average 1.4011299435028248) internal successors, (248), 213 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 248 transitions. [2021-11-25 18:48:17,555 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 248 transitions. Word has length 28 [2021-11-25 18:48:17,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:17,555 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 248 transitions. [2021-11-25 18:48:17,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:17,556 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 248 transitions. [2021-11-25 18:48:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 18:48:17,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:17,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:17,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:17,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:48:17,768 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:48:17,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:17,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1957250928, now seen corresponding path program 1 times [2021-11-25 18:48:17,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:48:17,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928310658] [2021-11-25 18:48:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:17,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:48:17,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:48:17,770 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:48:17,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-25 18:48:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:17,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 18:48:17,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:17,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:17,961 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:48:17,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 18:48:18,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:48:18,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:48:18,146 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:18,146 INFO L388 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 22 treesize of output 22 [2021-11-25 18:48:18,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:48:18,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-11-25 18:48:18,214 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:18,214 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2021-11-25 18:48:18,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-25 18:48:18,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2021-11-25 18:48:18,391 INFO L388 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 33 treesize of output 21 [2021-11-25 18:48:18,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-25 18:48:18,429 INFO L388 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 15 treesize of output 7 [2021-11-25 18:48:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:18,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:48:18,645 INFO L388 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 50 treesize of output 30 [2021-11-25 18:48:18,654 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~x~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_581) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_579) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-11-25 18:48:18,690 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_581) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_#t~mem4#1.base|)) (forall ((v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem4#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_579) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-11-25 18:48:18,704 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_579) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_581) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) .cse0)))) is different from false [2021-11-25 18:48:18,736 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:18,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 18 treesize of output 19 [2021-11-25 18:48:18,751 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:18,752 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2021-11-25 18:48:18,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 7 [2021-11-25 18:48:18,791 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:48:18,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2021-11-25 18:48:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:18,980 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:48:18,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928310658] [2021-11-25 18:48:18,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928310658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:48:18,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [114902723] [2021-11-25 18:48:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:18,981 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:48:18,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:48:18,983 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:48:19,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-25 18:48:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:19,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 18:48:19,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:19,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:19,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:48:19,428 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:48:19,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 18:48:19,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:48:19,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 18:48:19,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:48:19,617 INFO L388 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 16 treesize of output 8 [2021-11-25 18:48:19,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 18:48:19,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 18:48:19,920 INFO L388 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 15 treesize of output 7 [2021-11-25 18:48:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:19,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:48:20,146 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-11-25 18:48:20,169 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32))) is different from false [2021-11-25 18:48:20,180 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_624) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32))) is different from false [2021-11-25 18:48:20,200 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_620 (_ BitVec 32)) (v_ArrVal_624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_620)) |c_ULTIMATE.start_main_#t~malloc3#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32))) is different from false [2021-11-25 18:48:22,398 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_620 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc3#1.base_27| (_ BitVec 32)) (v_ArrVal_624 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_620)) |v_ULTIMATE.start_main_#t~malloc3#1.base_27| v_ArrVal_624) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc3#1.base_27|)))))) is different from false [2021-11-25 18:48:22,424 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-11-25 18:48:22,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2021-11-25 18:48:22,427 INFO L388 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 36 treesize of output 24 [2021-11-25 18:48:22,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-11-25 18:48:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:22,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [114902723] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:48:22,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918360739] [2021-11-25 18:48:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:22,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:48:22,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:48:22,440 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:48:22,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-25 18:48:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:22,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 18:48:22,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:22,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:22,685 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:48:22,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 18:48:22,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:48:22,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:48:23,019 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:48:23,020 INFO L388 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 21 treesize of output 25 [2021-11-25 18:48:23,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2021-11-25 18:48:23,053 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:23,053 INFO L388 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 22 treesize of output 22 [2021-11-25 18:48:23,156 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:23,156 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2021-11-25 18:48:23,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-25 18:48:23,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2021-11-25 18:48:23,397 INFO L388 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 33 treesize of output 21 [2021-11-25 18:48:23,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-25 18:48:23,425 INFO L388 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 15 treesize of output 7 [2021-11-25 18:48:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:23,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:48:23,482 INFO L388 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 50 treesize of output 30 [2021-11-25 18:48:23,490 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_669 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_669) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_668 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~x~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_668) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-11-25 18:48:23,521 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_668 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_668) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_#t~mem4#1.base|)) (forall ((v_ArrVal_669 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem4#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_669) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-11-25 18:48:23,533 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_668) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_669 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_669) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)))) is different from false [2021-11-25 18:48:23,549 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:23,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 18 treesize of output 19 [2021-11-25 18:48:23,560 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:23,560 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2021-11-25 18:48:23,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 7 [2021-11-25 18:48:23,596 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:48:23,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2021-11-25 18:48:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:23,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918360739] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:48:23,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:48:23,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12, 12, 13, 13] total 50 [2021-11-25 18:48:23,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656912170] [2021-11-25 18:48:23,688 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:48:23,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-25 18:48:23,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:48:23,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-25 18:48:23,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1361, Unknown=15, NotChecked=924, Total=2450 [2021-11-25 18:48:23,691 INFO L87 Difference]: Start difference. First operand 214 states and 248 transitions. Second operand has 50 states, 50 states have (on average 2.58) internal successors, (129), 50 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:27,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:27,608 INFO L93 Difference]: Finished difference Result 355 states and 402 transitions. [2021-11-25 18:48:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:48:27,608 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.58) internal successors, (129), 50 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-25 18:48:27,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:27,610 INFO L225 Difference]: With dead ends: 355 [2021-11-25 18:48:27,610 INFO L226 Difference]: Without dead ends: 355 [2021-11-25 18:48:27,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=414, Invalid=2476, Unknown=16, NotChecked=1254, Total=4160 [2021-11-25 18:48:27,612 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 563 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2013 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:27,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 1857 Invalid, 3470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1375 Invalid, 0 Unknown, 2013 Unchecked, 2.1s Time] [2021-11-25 18:48:27,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-11-25 18:48:27,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 216. [2021-11-25 18:48:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 179 states have (on average 1.3966480446927374) internal successors, (250), 215 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 250 transitions. [2021-11-25 18:48:27,620 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 250 transitions. Word has length 29 [2021-11-25 18:48:27,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:27,620 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 250 transitions. [2021-11-25 18:48:27,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.58) internal successors, (129), 50 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:27,621 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 250 transitions. [2021-11-25 18:48:27,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 18:48:27,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:27,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:27,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:27,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:28,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:28,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 18:48:28,227 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:48:28,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:28,228 INFO L85 PathProgramCache]: Analyzing trace with hash 247061139, now seen corresponding path program 1 times [2021-11-25 18:48:28,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:48:28,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819440456] [2021-11-25 18:48:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:28,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:48:28,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:48:28,233 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:48:28,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-25 18:48:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:28,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:48:28,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:28,412 INFO L388 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 26 treesize of output 18 [2021-11-25 18:48:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:48:28,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:48:28,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:48:28,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819440456] [2021-11-25 18:48:28,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819440456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:28,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:28,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:48:28,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894542800] [2021-11-25 18:48:28,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:28,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:48:28,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:48:28,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:48:28,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:48:28,437 INFO L87 Difference]: Start difference. First operand 216 states and 250 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:29,269 INFO L93 Difference]: Finished difference Result 235 states and 269 transitions. [2021-11-25 18:48:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:48:29,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-25 18:48:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:29,271 INFO L225 Difference]: With dead ends: 235 [2021-11-25 18:48:29,271 INFO L226 Difference]: Without dead ends: 235 [2021-11-25 18:48:29,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:48:29,272 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 106 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:29,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 303 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:48:29,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-25 18:48:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 221. [2021-11-25 18:48:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 184 states have (on average 1.4076086956521738) internal successors, (259), 220 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 259 transitions. [2021-11-25 18:48:29,277 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 259 transitions. Word has length 31 [2021-11-25 18:48:29,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:29,277 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 259 transitions. [2021-11-25 18:48:29,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:29,278 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 259 transitions. [2021-11-25 18:48:29,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 18:48:29,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:29,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:29,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-25 18:48:29,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:48:29,490 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:48:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:29,490 INFO L85 PathProgramCache]: Analyzing trace with hash 247061140, now seen corresponding path program 1 times [2021-11-25 18:48:29,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:48:29,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46592957] [2021-11-25 18:48:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:29,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:48:29,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:48:29,491 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:48:29,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-25 18:48:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:29,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 18:48:29,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:29,742 INFO L388 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 23 treesize of output 15 [2021-11-25 18:48:29,744 INFO L388 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 34 treesize of output 18 [2021-11-25 18:48:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:48:29,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:48:29,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:48:29,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46592957] [2021-11-25 18:48:29,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46592957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:29,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:29,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:48:29,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939644686] [2021-11-25 18:48:29,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:29,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:48:29,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:48:29,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:48:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:48:29,830 INFO L87 Difference]: Start difference. First operand 221 states and 259 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:31,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:31,154 INFO L93 Difference]: Finished difference Result 230 states and 263 transitions. [2021-11-25 18:48:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:48:31,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-25 18:48:31,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:31,157 INFO L225 Difference]: With dead ends: 230 [2021-11-25 18:48:31,157 INFO L226 Difference]: Without dead ends: 230 [2021-11-25 18:48:31,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:48:31,157 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 64 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:31,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 359 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:48:31,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-25 18:48:31,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 219. [2021-11-25 18:48:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 184 states have (on average 1.3804347826086956) internal successors, (254), 218 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 254 transitions. [2021-11-25 18:48:31,168 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 254 transitions. Word has length 31 [2021-11-25 18:48:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:31,169 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 254 transitions. [2021-11-25 18:48:31,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:31,169 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 254 transitions. [2021-11-25 18:48:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 18:48:31,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:31,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:31,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:31,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:48:31,382 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:48:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1202557075, now seen corresponding path program 1 times [2021-11-25 18:48:31,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:48:31,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814628176] [2021-11-25 18:48:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:31,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:48:31,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:48:31,384 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:48:31,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-25 18:48:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:31,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-25 18:48:31,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:31,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:31,649 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:48:31,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 18:48:31,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:48:31,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:48:31,862 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:48:31,863 INFO L388 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 21 treesize of output 25 [2021-11-25 18:48:31,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2021-11-25 18:48:31,899 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:31,899 INFO L388 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 22 treesize of output 22 [2021-11-25 18:48:31,997 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:31,997 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2021-11-25 18:48:32,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-25 18:48:32,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2021-11-25 18:48:32,323 INFO L388 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 33 treesize of output 21 [2021-11-25 18:48:32,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-25 18:48:32,408 INFO L388 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 15 treesize of output 7 [2021-11-25 18:48:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:32,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:48:32,653 INFO L388 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 77 treesize of output 57 [2021-11-25 18:48:32,663 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_781 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~x~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_781) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_780 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_780) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-11-25 18:48:32,693 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_781 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_781) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_#t~mem4#1.base|)) (forall ((v_ArrVal_780 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_780) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_#t~mem4#1.offset|))) is different from false [2021-11-25 18:48:32,708 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_780 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_780) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (forall ((v_ArrVal_781 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_781) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) .cse0)))) is different from false [2021-11-25 18:48:32,724 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:32,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 18 treesize of output 19 [2021-11-25 18:48:32,735 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:32,735 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2021-11-25 18:48:32,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 7 [2021-11-25 18:48:32,791 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:48:32,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2021-11-25 18:48:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:32,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:48:32,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814628176] [2021-11-25 18:48:32,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814628176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:48:32,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [978286512] [2021-11-25 18:48:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:32,945 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:48:32,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:48:32,946 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:48:32,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-25 18:48:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:33,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-25 18:48:33,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:33,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:33,222 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:48:33,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 18:48:33,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:48:33,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:48:33,321 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:48:33,321 INFO L388 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 21 treesize of output 25 [2021-11-25 18:48:33,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2021-11-25 18:48:33,355 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:33,355 INFO L388 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 22 treesize of output 22 [2021-11-25 18:48:33,436 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:33,436 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2021-11-25 18:48:33,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-25 18:48:33,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2021-11-25 18:48:33,625 INFO L388 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 33 treesize of output 21 [2021-11-25 18:48:33,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-25 18:48:33,642 INFO L388 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 15 treesize of output 7 [2021-11-25 18:48:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:33,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:48:33,732 INFO L388 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 77 treesize of output 57 [2021-11-25 18:48:33,743 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_826 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_826) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (forall ((v_ArrVal_825 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~x~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_825) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-11-25 18:48:33,784 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_826 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem4#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_826) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_825 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_825) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_#t~mem4#1.base|))) is different from false [2021-11-25 18:48:33,802 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_825 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_825) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) .cse0))) (forall ((v_ArrVal_826 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_826) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)))) is different from false [2021-11-25 18:48:33,824 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:33,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 18 treesize of output 19 [2021-11-25 18:48:33,841 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:33,841 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2021-11-25 18:48:33,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 7 [2021-11-25 18:48:33,882 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:48:33,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2021-11-25 18:48:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:33,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [978286512] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:48:33,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902056427] [2021-11-25 18:48:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:33,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:48:33,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:48:33,999 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:48:34,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-25 18:48:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:34,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 18:48:34,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:34,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:48:34,261 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:48:34,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 18:48:34,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:48:34,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-11-25 18:48:34,496 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:34,496 INFO L388 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 22 treesize of output 22 [2021-11-25 18:48:34,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:48:34,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-11-25 18:48:34,567 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:34,568 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2021-11-25 18:48:34,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2021-11-25 18:48:34,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-25 18:48:34,833 INFO L388 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 33 treesize of output 21 [2021-11-25 18:48:34,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-25 18:48:34,853 INFO L388 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 15 treesize of output 7 [2021-11-25 18:48:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:34,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:48:34,942 INFO L388 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 77 treesize of output 57 [2021-11-25 18:48:34,953 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_872 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~x~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_872) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_869 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_869) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.offset|))) is different from false [2021-11-25 18:48:34,984 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_872 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_872) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_#t~mem4#1.base|)) (forall ((v_ArrVal_869 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem4#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_869) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-11-25 18:48:35,016 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_872 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_872) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) .cse0))) (forall ((v_ArrVal_869 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_869) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)))) is different from false [2021-11-25 18:48:35,078 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:35,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 18 treesize of output 19 [2021-11-25 18:48:35,092 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:48:35,092 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2021-11-25 18:48:35,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 7 [2021-11-25 18:48:35,143 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:48:35,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 18 treesize of output 1 [2021-11-25 18:48:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:48:35,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902056427] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:48:35,262 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:48:35,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 36 [2021-11-25 18:48:35,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311352928] [2021-11-25 18:48:35,262 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:48:35,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-25 18:48:35,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:48:35,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-25 18:48:35,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=638, Unknown=9, NotChecked=522, Total=1260 [2021-11-25 18:48:35,264 INFO L87 Difference]: Start difference. First operand 219 states and 254 transitions. Second operand has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:38,653 INFO L93 Difference]: Finished difference Result 373 states and 420 transitions. [2021-11-25 18:48:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 18:48:38,653 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-25 18:48:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:38,655 INFO L225 Difference]: With dead ends: 373 [2021-11-25 18:48:38,655 INFO L226 Difference]: Without dead ends: 373 [2021-11-25 18:48:38,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 152 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=218, Invalid=1214, Unknown=10, NotChecked=720, Total=2162 [2021-11-25 18:48:38,657 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 359 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1441 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:38,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 1578 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1284 Invalid, 0 Unknown, 1441 Unchecked, 2.4s Time] [2021-11-25 18:48:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-25 18:48:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 225. [2021-11-25 18:48:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 190 states have (on average 1.3736842105263158) internal successors, (261), 224 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 261 transitions. [2021-11-25 18:48:38,664 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 261 transitions. Word has length 33 [2021-11-25 18:48:38,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:38,664 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 261 transitions. [2021-11-25 18:48:38,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:48:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 261 transitions. [2021-11-25 18:48:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 18:48:38,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:38,666 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:38,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-11-25 18:48:38,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:39,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:39,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:48:39,269 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 67 more)] === [2021-11-25 18:48:39,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:39,269 INFO L85 PathProgramCache]: Analyzing trace with hash -266558986, now seen corresponding path program 2 times [2021-11-25 18:48:39,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:48:39,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146110649] [2021-11-25 18:48:39,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:48:39,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:48:39,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:48:39,270 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:48:39,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-25 18:48:39,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 18:48:39,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:48:39,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 18:48:39,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:48:39,463 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 18:48:39,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 22 [2021-11-25 18:48:39,597 INFO L354 Elim1Store]: treesize reduction 9, result has 64.0 percent of original size [2021-11-25 18:48:39,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 40 [2021-11-25 18:48:39,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:48:39,845 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:39,845 INFO L388 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 22 treesize of output 22 [2021-11-25 18:48:39,899 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:48:39,899 INFO L388 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 22 treesize of output 22 [2021-11-25 18:48:39,920 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:48:39,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-25 18:48:39,976 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:48:39,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-11-25 18:48:40,170 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-25 18:48:40,170 INFO L388 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 52 treesize of output 54 [2021-11-25 18:48:40,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 8 [2021-11-25 18:48:40,323 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-25 18:48:40,324 INFO L388 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 61 treesize of output 61 [2021-11-25 18:48:40,335 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:48:40,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146110649] [2021-11-25 18:48:40,336 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-25 18:48:40,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1095402390] [2021-11-25 18:48:40,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:48:40,337 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:48:40,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:48:40,338 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:48:40,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-25 18:48:40,432 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3849841a at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.variables.ProgramVarUtils.constructConstantForAuxVar(ProgramVarUtils.java:119) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.computeClosedFormula(UnmodifiableTransFormula.java:172) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:274) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.decoupleArrayValues(TransFormulaUtils.java:1226) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:388) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 18:48:40,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744004532] [2021-11-25 18:48:40,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:48:40,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:48:40,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:48:40,435 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:48:40,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-25 18:48:40,499 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3849841a at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.variables.ProgramVarUtils.constructConstantForAuxVar(ProgramVarUtils.java:119) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.computeClosedFormula(UnmodifiableTransFormula.java:172) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:274) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.decoupleArrayValues(TransFormulaUtils.java:1226) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:388) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 18:48:40,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:40,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-25 18:48:40,500 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-25 18:48:40,500 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-25 18:48:40,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (70 of 71 remaining) [2021-11-25 18:48:40,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (69 of 71 remaining) [2021-11-25 18:48:40,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (68 of 71 remaining) [2021-11-25 18:48:40,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (67 of 71 remaining) [2021-11-25 18:48:40,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (66 of 71 remaining) [2021-11-25 18:48:40,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (65 of 71 remaining) [2021-11-25 18:48:40,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (64 of 71 remaining) [2021-11-25 18:48:40,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (63 of 71 remaining) [2021-11-25 18:48:40,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (62 of 71 remaining) [2021-11-25 18:48:40,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (61 of 71 remaining) [2021-11-25 18:48:40,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (60 of 71 remaining) [2021-11-25 18:48:40,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (59 of 71 remaining) [2021-11-25 18:48:40,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (58 of 71 remaining) [2021-11-25 18:48:40,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (57 of 71 remaining) [2021-11-25 18:48:40,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (56 of 71 remaining) [2021-11-25 18:48:40,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (55 of 71 remaining) [2021-11-25 18:48:40,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (54 of 71 remaining) [2021-11-25 18:48:40,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (53 of 71 remaining) [2021-11-25 18:48:40,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (52 of 71 remaining) [2021-11-25 18:48:40,516 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (51 of 71 remaining) [2021-11-25 18:48:40,516 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (50 of 71 remaining) [2021-11-25 18:48:40,516 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (49 of 71 remaining) [2021-11-25 18:48:40,516 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (48 of 71 remaining) [2021-11-25 18:48:40,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (47 of 71 remaining) [2021-11-25 18:48:40,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (46 of 71 remaining) [2021-11-25 18:48:40,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (45 of 71 remaining) [2021-11-25 18:48:40,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (44 of 71 remaining) [2021-11-25 18:48:40,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (43 of 71 remaining) [2021-11-25 18:48:40,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (42 of 71 remaining) [2021-11-25 18:48:40,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (41 of 71 remaining) [2021-11-25 18:48:40,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (40 of 71 remaining) [2021-11-25 18:48:40,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (39 of 71 remaining) [2021-11-25 18:48:40,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK (38 of 71 remaining) [2021-11-25 18:48:40,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION (37 of 71 remaining) [2021-11-25 18:48:40,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (36 of 71 remaining) [2021-11-25 18:48:40,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (35 of 71 remaining) [2021-11-25 18:48:40,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (34 of 71 remaining) [2021-11-25 18:48:40,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (33 of 71 remaining) [2021-11-25 18:48:40,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (32 of 71 remaining) [2021-11-25 18:48:40,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (31 of 71 remaining) [2021-11-25 18:48:40,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION (30 of 71 remaining) [2021-11-25 18:48:40,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION (29 of 71 remaining) [2021-11-25 18:48:40,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (28 of 71 remaining) [2021-11-25 18:48:40,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION (27 of 71 remaining) [2021-11-25 18:48:40,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION (26 of 71 remaining) [2021-11-25 18:48:40,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION (25 of 71 remaining) [2021-11-25 18:48:40,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION (24 of 71 remaining) [2021-11-25 18:48:40,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION (23 of 71 remaining) [2021-11-25 18:48:40,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION (22 of 71 remaining) [2021-11-25 18:48:40,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION (21 of 71 remaining) [2021-11-25 18:48:40,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION (20 of 71 remaining) [2021-11-25 18:48:40,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATION (19 of 71 remaining) [2021-11-25 18:48:40,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION (18 of 71 remaining) [2021-11-25 18:48:40,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK (17 of 71 remaining) [2021-11-25 18:48:40,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK (16 of 71 remaining) [2021-11-25 18:48:40,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION (15 of 71 remaining) [2021-11-25 18:48:40,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION (14 of 71 remaining) [2021-11-25 18:48:40,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57REQUIRES_VIOLATION (13 of 71 remaining) [2021-11-25 18:48:40,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION (12 of 71 remaining) [2021-11-25 18:48:40,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION (11 of 71 remaining) [2021-11-25 18:48:40,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATION (10 of 71 remaining) [2021-11-25 18:48:40,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK (9 of 71 remaining) [2021-11-25 18:48:40,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_LEAK (8 of 71 remaining) [2021-11-25 18:48:40,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63REQUIRES_VIOLATION (7 of 71 remaining) [2021-11-25 18:48:40,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64REQUIRES_VIOLATION (6 of 71 remaining) [2021-11-25 18:48:40,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATION (5 of 71 remaining) [2021-11-25 18:48:40,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66REQUIRES_VIOLATION (4 of 71 remaining) [2021-11-25 18:48:40,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_FREE (3 of 71 remaining) [2021-11-25 18:48:40,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE (2 of 71 remaining) [2021-11-25 18:48:40,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_FREE (1 of 71 remaining) [2021-11-25 18:48:40,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70ASSERT_VIOLATIONMEMORY_LEAK (0 of 71 remaining) [2021-11-25 18:48:40,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:40,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-25 18:48:40,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-25 18:48:41,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:48:41,158 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:41,161 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:48:41,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:48:41 BoogieIcfgContainer [2021-11-25 18:48:41,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:48:41,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:48:41,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:48:41,175 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:48:41,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:46:53" (3/4) ... [2021-11-25 18:48:41,179 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:48:41,179 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:48:41,179 INFO L158 Benchmark]: Toolchain (without parser) took 109586.74ms. Allocated memory was 50.3MB in the beginning and 107.0MB in the end (delta: 56.6MB). Free memory was 26.1MB in the beginning and 74.8MB in the end (delta: -48.6MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2021-11-25 18:48:41,180 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 50.3MB. Free memory was 31.3MB in the beginning and 31.2MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:48:41,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 686.98ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 25.9MB in the beginning and 35.8MB in the end (delta: -9.9MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2021-11-25 18:48:41,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.76ms. Allocated memory is still 60.8MB. Free memory was 35.8MB in the beginning and 33.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:48:41,181 INFO L158 Benchmark]: Boogie Preprocessor took 72.34ms. Allocated memory is still 60.8MB. Free memory was 33.2MB in the beginning and 31.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:48:41,181 INFO L158 Benchmark]: RCFGBuilder took 930.23ms. Allocated memory is still 60.8MB. Free memory was 31.2MB in the beginning and 39.6MB in the end (delta: -8.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2021-11-25 18:48:41,181 INFO L158 Benchmark]: TraceAbstraction took 107791.54ms. Allocated memory was 60.8MB in the beginning and 107.0MB in the end (delta: 46.1MB). Free memory was 39.3MB in the beginning and 75.8MB in the end (delta: -36.5MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2021-11-25 18:48:41,182 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 107.0MB. Free memory was 75.8MB in the beginning and 74.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:48:41,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 50.3MB. Free memory was 31.3MB in the beginning and 31.2MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 686.98ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 25.9MB in the beginning and 35.8MB in the end (delta: -9.9MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.76ms. Allocated memory is still 60.8MB. Free memory was 35.8MB in the beginning and 33.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.34ms. Allocated memory is still 60.8MB. Free memory was 33.2MB in the beginning and 31.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 930.23ms. Allocated memory is still 60.8MB. Free memory was 31.2MB in the beginning and 39.6MB in the end (delta: -8.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * TraceAbstraction took 107791.54ms. Allocated memory was 60.8MB in the beginning and 107.0MB in the end (delta: 46.1MB). Free memory was 39.3MB in the beginning and 75.8MB in the end (delta: -36.5MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 107.0MB. Free memory was 75.8MB in the beginning and 74.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = ((void*)0) [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int marked = 0; [L1004] COND TRUE __VERIFIER_nondet_int() || !marked [L1007] x->next = malloc(sizeof(SLL)) [L1008] EXPR x->next [L1008] x = x->next [L1009] x->next = ((void*)0) [L1011] COND TRUE __VERIFIER_nondet_int() [L1013] marked = 1 [L1016] COND TRUE \read(marked) [L1017] x->data = 1 [L1004] COND TRUE __VERIFIER_nondet_int() || !marked [L1007] x->next = malloc(sizeof(SLL)) [L1008] EXPR x->next [L1008] x = x->next [L1009] x->next = ((void*)0) [L1011] COND TRUE __VERIFIER_nondet_int() [L1013] marked = 1 [L1016] COND TRUE \read(marked) [L1017] x->data = 1 [L1004] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1022] x = head [L1024] COND FALSE !(!(((void*)0) != x)) [L1025] marked = 0 [L1027] EXPR x->next [L1027] x->next != ((void*)0) && x->next->data == 0 [L1027] EXPR x->next [L1027] x->next->data - UnprovableResult [Line: 997]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 997]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1024]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1054]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1054]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1071]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1071]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 993]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 162 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 107.7s, OverallIterations: 19, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 21.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3192 SdHoareTripleChecker+Valid, 13.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3192 mSDsluCounter, 9380 SdHoareTripleChecker+Invalid, 11.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6758 IncrementalHoareTripleChecker+Unchecked, 7429 mSDsCounter, 324 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6057 IncrementalHoareTripleChecker+Invalid, 13139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 324 mSolverCounterUnsat, 1951 mSDtfsCounter, 6057 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 940 GetRequests, 627 SyntacticMatches, 59 SemanticMatches, 254 ConstructedPredicates, 33 IntricatePredicates, 1 DeprecatedPredicates, 2235 ImplicationChecksByTransitivity, 68.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=18, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 639 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 76.9s InterpolantComputationTime, 602 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 861 ConstructedInterpolants, 151 QuantifiedInterpolants, 16890 SizeOfPredicates, 212 NumberOfNonLiveVariables, 3301 ConjunctsInSsa, 423 ConjunctsInUnsatCore, 38 InterpolantComputations, 14 PerfectInterpolantSequences, 7/31 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 could not prove your program: unable to determine feasibility of some traces [2021-11-25 18:48:41,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ddd7da-de4d-4672-942c-c2dc6b3181c3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN